Name: Sarah Jane Smith
Played by: Elisabeth Sladen
Home Planet: Earth
Species: Human
First Appearance: Invasion of the Bane
More Information: Sarah Jane Smith is well acquainted with saving the world. An old friend and companion of the Doctor, Sarah Jane has travelled the universe, solving mysteries, tackling monsters and fighting alien foe all the way. Her travelling days may be behind her, but as a journalist with a nose for trouble, Sarah Jane often finds herself on amazing adventures closer to home. With the help of her adopted son, Luke, his best mate Clyde and their new neighbour Rani, along with her sonic lipstick, and the alien computer Mr Smith, she must defend Earth from extraterrestrial threats and monsters.

Name: Luke Smith
Played by: Tommy Knight
Home Planet: Earth
Species: Human
First Appearance: Invasion of the Bane
More Information: 14-year-old Luke Smith looks just like any other normal teenage boy, but look closer and you'll see that he's very, very special. Grown by the alien Bane as The Archetype in their plan for world domination, Luke has the brain power of 10,000 people but, as he's only really a year or so old, his understanding of the world around him is sometimes lacking. But he's a fast learner, and his intelligence often proves key in saving the day.

Name: Clyde Langer
Played by: Daniel Anthony
Home Planet: Earth
Species: Human
First Appearance: Revenge of the Slitheen
More Information: Clyde Langer is 15, confident and the team joker, happiest when taking on aliens and monsters to save the planet. He lives with his mum, loves football, has a flair for art (which he keeps quiet cos it's not always seen as that cool) and has a healthy disrespect for authority. When teamed with Luke's intelligence, Rani's instincts and Sarah Jane's experience, the friends are a force to be reckoned with.

Name: Rani Chandra
Played by: Anjli Mohindra
Home Planet: Earth
Species: Human
First Appearance: The Day of the Clown
More Information: 15, inquisitive, smart and sassy. Wants to be a journalist, a sort of junior Sarah Jane, and thus idolises Sarah Jane just a little and in return, Sarah Jane takes her happily on her investigations. Gets on well with her parents, although she's always embarrassed that her dad is the new Head Teacher at Park Vale. Rani enjoys Luke's company because they're both quite bright and eager to learn. However, she's equally fond of Clyde because he's cool and a bit rebellious, and has charm.

Name: Maria Jackson
Played by: Yasmin Paige
Home Planet: Earth
Species: Human
First Appearance: Invasion of the Bane
More Information: When Maria Jackson moved to Bannerman Road, her life changed forever. After a chance encounter with Sarah Jane Smith and a friendly visiting alien, Maria's eyes were opened to a whole new world of opportunity, mystery and adventure. A good friend to Sarah Jane, Maria often finds herself in sticky situations, but with the help and support of her friends Luke and Clyde, Dad Alan, and of course, Sarah Jane Smith, it's often the evil aliens and horrific monsters who threaten the earth that come unstuck.

Name: Haresh Chandra
Played by: Ace Bhatti
Home Planet: Earth
Species: Human
First Appearance: The Day of the Clown
More Information: The new Head Teacher of Park Vale and Rani's dad, he can be prone to slight pomposity, due to the authority at the school. A great cook, he adores Rani and is very pleased that she has befriended Luke Smith, whose intelligence he respects. He's decidedly less impressed by her friendship with Clyde, who he sees as trouble and so always has one watchful eye on his daughter and the other on Clyde.

Name: Gita Chandra
Played by: Mina Anwar
Home Planet: Earth
Species: Human
First Appearance: The Day of the Clown
More Information: Rani's mum is a strong-willed, independent businesswoman, who runs her own flower shop called Bloomin' Lovely. Gita really likes Sarah Jane - she appreciates the fact she wants to help Rani be a journalist. Gita is a lovely person, although she can occasionally be a little overpowering and tends to burst into things uninvited and not take the hint that it's time to leave.

Name: Alan Jackson
Played by: Joseph Millson
Home Planet: Earth
Species: Human
First Appearance: Invasion of the Bane
More Information: Alan is Maria's sympathetic, caring and very understanding father. He has a brilliant easy going and casual relationship with Maria, which Sarah Jane would love to emulate with Luke. That doesn't mean he doesn't still do embarrassing dad stuff though. The odd ruffle of Maria's hair and insistence on a goodbye peck on the cheek before school, is enough to make anyone cringe. Working in the IT industry and recently divorced from Maria's mum, Alan lives a pretty suburban life.

Name: Chrissie Jackson
Played by: Juliet Cowan
Home Planet: Earth
Species: Human
First Appearance: Invasion of the Bane
More Information: Chrissie is Maria's warm hearted, but flighty mother. Although divorced from Alan and living with her boyfriend Ivan, Chrissie still makes regular visits to see her daughter and it's obvious that she loves her to bits. Maria misses having her mum around, but she finds her a bit trying at times. Chrissie's ability to speak before thinking, and usually at a hundred miles an hour, makes her seem just a teeny bit self obsessed and rude to almost everyone she meets, including Sally Jane, Mary Jane or whatever her name is. She never means any harm though, she's just...Chrissie.

Name: Mr Smith
Voiced by: Alexander Armstrong
Home Planet: Unknown
Species: Xylok (crystal)
First Appearance: Invasion of the Bane
More Information: Mr Smith is hidden behind the chimney breast in Sarah Jane's attic at 13 Bannerman Road. It reveals itself on the vocal command "Mr Smith, I need you," although it is capable of self-activation. When it reveals itself as requested a fanfare plays. It can also request the attention of Sarah Jane and be heard quite clearly from her living room, a full three floors below.

Name: K-9
Voiced by: John Leeson
Home Planet: Bi-Al Foundation, on K4067 - an asteroid near Titan
Species: Robot
Appeared in: Invasion of the Bane, The Lost Boy
More Information: Sarah Jane Smith's pet robot dog, K-9 Mark IV, is away sealing a black hole created by scientists in Switzerland. His orbit brings him into brief contact with Sarah Jane every so often, as seen in "Invasion of the Bane". He also plays a major role toward the end of The Lost Boy, by exchanging laser fire with Mr. Smith and allowing Sarah Jane to download the Armageddon Virus into
Mr. Smith before returning to seal the breach.

Name: Martin Trueman
Played by: Russ Abbott
Home Planet: Earth
Species: Human
Appeared in: Secrets of the Stars
More Information: When Martin Trueman is taken over by the fizzing red energy of the Ancient Lights he becomes a very different man indeed. Suddenly Trueman has the power to predict the future and brainwash people in to following him as he strives to prepare for the return of the Ancient Lights.

Name: Jeggorabax Energy Entity
Played by: Bradley Walsh
Home Planet: Jeggorabax Cluster
Species: Unknown
Appeared in: The Day of the Clown
More Information: The Jeggorabax entity came to Earth in a meteorite that crashed down in the Weserbergland Mountains in Germany, 1283 and started its reign of fear by taking on the form of the Pied Piper and stealing away the children of Hamelin.

Name: Commander Kaagh
Played by: Anthony O'Donnell
Home Planet: Sontar
Species: Sontaran
Appeared in: The Last Sontaran
More Information: These short, stocky aliens have dome shaped heads and very strong features. They are extremely feisty and bred for battle. Kaagh has a number of scars from past battles which he wears with pride as a badge of honour. A probic vent on the back of the neck is a Sontaran's only weakness. One swift blow to this vent can render a Sontaran instantly unconscious, which is why they never turn their back to their enemy. Commander Kaagh, known to his peers as Kaagh the Slayer, is a member of the Tenth Sontaran Battle Fleet's Special Assault Squad. He was the sole survivor of the Sontaran Battle Fleet's Earth Invasion Force and is trained to operate behind enemy lines. His battle scars are a sign of his proud and fierce nature and his vicious temperament should not be taken lightly. He is desperate to seek revenge on the Earth and restore honour to himself and to Sontar.

Disguise Names: Jay and Heidi Stafford
Slitheen Names: Jay Slitheen and Heidi Slitheen
Played by: Jay Simpson and Holly Atkins
Home Planet: Raxacoricofallapatorius
Species: Raxacoricofallapatorian
Appeared in: The Lost Boy
More Information: Jay and Heidi Stafford are actually members of the notorious Family Slitheen disguised in their new, advanced slim-line flesh suits. Conspiring with an unknown alien called the Xylok, the Family Slitheen seek revenge as well as a profit.

Name: Xylok
Voiced by: Alexander Armstrong
Home Planet: Unknown
Species: Xylok (crystal)
Appeared in: The Lost Boy
More Information: The Xylok is a crystal race which crashed to Earth as a meteor and were trapped underneath the surface of the Earth for thousands of years until the eruption of Krakatoa freed a tiny piece of the Xylok entity. Sarah Jane was able to obtain the piece for inspection where she found it could communicate with her laptop. By doing so it was able to create Mr Smith.

Name: Nathan Goss
Slitheen Name: Nathan Slitheen
Played by: Ryan Watson
Home Planet: Raxacoricofallapatorius
Species: Raxacoricofallapatorian
Appeared in: The Lost Boy
More Information: This is the same Slitheen who appeared in Revenge of the Slitheen, but is now disguised as Nathan Goss, but was earlier disguised as Carl. Nathan was helping Jay and Heidi to bring the Moon crashing down on Earth.

Name: The Trickster
Played by: Paul Marc Davis
Home Planet: Unknown
Species: Unknown
Appeared in: Whatever Happened to Sarah Jane?
More Information: Existing outside ordinary space and time, the Trickster travelled back through time and found Sarah Jane in her teenage years, when an accident involving her best friend occurred. The Trickster swapped Sarah Jane and her friend Andrea around - Sarah Jane now drowned, Andrea lived and thus no one was present to stop the destruction of Earth. No one except Sarah Jane's friend Maria, who realised the truth...

Name: Graske
Played by: Jimmy Vee
Voiced by: Philip Hurd-Wood
Home Planet: Griffoth
Species: Graske
Appeared in: Whatever Happened to Sarah Jane?
More Information: The Graske are a species of alien who usually travel through time and space replacing innocent inhabitants with near-identical doubles who obey the Graske's commands. Enslaved by the Trickster, the Graske removed Sarah Jane from time leaving her in Limbo.

Name: Andrea Yates
Played by: Jane Asher, young Andrea played by Francesca Miller.
Home Planet: Earth
Species: Human
Appeared in: Whatever Happened to Sarah Jane?
More Information: A friend of Sarah Jane's from her schooldays. In the original, 'correct' timeline, she is killed in July 1964 when Sarah was thirteen, breaking into a closed seaside pier and falling off the pier to her death. Alien intervention swaps Andrea for Sarah, creating a new timeline where Andrea is alive in the present and Sarah long since dead, leaving the Earth vulnerable to a meteor strike. Maria Jackson, still capable of remembering Sarah after the Trickster has placed Sarah Jane in limbo, confronts Andrea, who has forgotten the deal she made; however, Maria's intervention causes her to remember. She ultimately decides to go back on her deal, with the result that she is killed in 1964 after all, with one difference to the original timeline; she now manages to say 'Remember me' before falling off the pier.

Name: General Uvlavad Kudlak
Played by: Paul Kasey
Voiced by: Silas Carson
Home Planet: Unknown, although it is located in the Spiral Cluster of the Dragon Nebula.
Species: Uvodni
Appeared in: Warriors of Kudlak
More Information: The Uvodni home world is located thirty four thousand light years away from Earth in the Spiral Cluster of the Dragon Nebula. The Uvodni were part of a planetary alliance that fought the Malakh in the Ghost Wars of the Horsehead Nebula. However, when their allies were crushed by the Malakh Empire, the Uvodni continued to fight.

Name: Mark Grantham
Played by: Chook Sibtain
Home Planet: Earth
Species: Human
Appeared in: Warriors of Kudlak
More Information: Following orders from General Kudlak, Mark Grantham is the manager of a large gaming complex where using laser guns and shooting at opponents sensors, children become 'warriors of the future' in an exciting and futuristic war simulation called Combat 3000.

Name: The Mistress
Played by: Paul Kasey
Voiced by: Tina Greatex
Home Planet: Unknown, although it is located in the Spiral Cluster of the Dragon Nebula.
Species: Uvodni
Appeared in: Warriors of Kudlak
More Information: The Mistress was on a computer talking to General Kudlak. Mr Grantham and Kudlak were working for the Mistress. When Kudlak brings the children to the Mistress, Luke discovers a message made by the Uvodni Emperor ten years ago, revealing an Armistice has been made with the Malakh. Not programmed to recognise "peace" as a concept, the computer Mistress had buried the message and kept leading Kudlak in recruitments. With the truth revealed, Kudlak destroys The Mistress.

Name: The Abbess
Played by: Audrey Ardington
Home Planet: Gorgos
Species: Gorgon
Appeared in: Eye of the Gorgon
More Information: The Nuns believed the Gorgon was biding its time until it could return home. However, the truth was, the Gorgon was seeking a talisman, with which it could activate a space portal and open a gateway to enable its people to swarm onto Earth and take over the world.

Name: Sister Helena
Played by: Beth Goddard
Home Planet: Earth
Species: Human
Appeared in: Eye of the Gorgon
More Information: Leading her cloister of nuns in service of the mysteriously veiled Abbess, Sister Helena was on a quest to find an ancient talisman to restore her mistress to full power and fulfil the St. Agnes sisters' search of three thousand years.

Name: Bea Nelson-Stanley
Played by: Phyllida Law
Home Planet: Earth
Species: Human
Appeared in: Eye of the Gorgon
More Information: Bea Nelson-Stanley is an old lady residing in Lavendar Lawns, a nursing home. She is suffering from Alzheimer's Disease. As the appearance of a mysterious nun sighted in the nursing home is investigated, Bea entrusts Luke Smith with an alien talisman which her husband, Edgar, gave to her. Bea later reveals that her husband had seen Sontarans. After the talisman is used to defeat the Gorgon, Sarah Jane Smith and Maria Jackson return it to Bea; she briefly sees a vision of her husband, but is not cured of her Alzheimer's as Maria had hoped.

Name: The Slitheen Family
Played by: Paul Kasey/Jimmy Vee
Home Planet: Raxacoricofallapatorius
Species: Raxacoricofallapatorian
Appeared in: Revenge of the Slitheen, The Lost Boy
More Information: The Family Slitheen squeeze their massive bodies into the much smaller skins of their human victims, using compression fields generated through collars worn around their necks. However, in order to maintain this compression, gas exchanges must be released causing a condition similar to human flatulence.

Name: Carl Slitheen
Played by: Anton Thompson McCormick/Jimmy Vee
Home Planet: Raxacoricofallapatorius
Species: Raxacoricofallapatorian
Appeared in: Revenge of the Slitheen, The Lost Boy
More Information: Maria and Clyde are chased first by their Slitheen science teacher, Mr. Jeffrey and then the school genius, Carl, unzips in front of them to reveal a child Slitheen. Luckily Maria and Clyde escape, and later Luke turns the machine that will turn off the Sun off and uses the Sonic Lipstick to cause the machine to malfunction. As the room explodes, Carl is trapped, but he teleport's away, but Sarah Jane is unaware of this....

Disguise Names: Mr Blakeman and Mr Geffrey
Slitheen Names: Glune Fex Fize Sharleveer-Slam Slitheen and Kist Magg Thek Lutovin-Day Slitheen.
Played by: Martyn Ellis and Ian Midlane.
Home Planet: Raxacoricofallapatorius
Species: Raxacoricofallapatorian
Appeared in: Revenge of the Slitheen
More Information: Glune Fex Fize and Kist Magg Thek are Slitheen in disguise in Park Vale. They are planning to turn off the Sun but Sarah Jane, Luke, Maria, and Clyde manage to stop them.

Name: Janine Slitheen
Played by: Imogen Bain
Home Planet: Raxacoricofallapatorius
Species: Raxacoricofallapatorian
Appeared in: Revenge of the Slitheen
More Information: Sarah Jane is attacked by a female Slitheen who disguised herself as a company secretary, Janine. Sarah Jane manages to escape and stop the evil plans of the Slitheen and Janine is electrocuted and explodes.

Name: Star Poet
Home Planet: Arcateen 5
Species: Arcateenian
Appeared in: Invasion of the Bane
More information: A gaseous alien from Arcateen 5, the star poet travels the stars, singing her songs and poems as she goes. One of a truly beautiful and benevolent race of beings, her psychedelic aura gives of colours that go far beyond the spectrum humans can see. When Sarah Jane Smith helped her find her way home, she left behind a gift, a communicator which was very beneficial in stopping the subsequent invasion by the Bane...

Name: Kelsey Harper
Played by: Porsha Lawrence Mavour
Home Planet: Earth
Species: Human
Appeared in: Invasion of the Bane
More Information: She is a resident of Bannerman Road who befriends Maria Jackson shortly after Maria and her father move in down the road in the episode, "Invasion of the Bane". One of the 98 per cent of the population addicted to the soft drink Bubble Shock!, Kelsey took Maria to see the Bubble Shock! factory, where she became embroiled in Sarah Jane Smith's attempt to fight off the invading aliens, the Bane. However, Kelsey fell under the Bane's control owing to her addiction. When Sarah Jane, Maria and Luke Smith defeated the Bane, Kelsey had reportedly recovered, but was denying the existence of aliens.

Name: Davey
Played by: Jamie Davis
Home Planet: Unknown
Species: Bane
Appeared in: Invasion of the Bane
More Information: He is referred to as 'the muffin' by Kelsey Harper. He is really a Bane who poses as a PR officer for Bubble Shock! and gives tours of the Bubble Shock! factory. He is also responsible for security and scanning the visitors to provide modelling information for the Bubble Shock! scientists developing the Archetype. He is young and somewhat cocky as well as slightly naïve; his training on human culture led him to believe that a male entering a female-use bathroom was an unforgivable taboo of the culture. Mrs Wormwood assigns Davey to assassinate Sarah Jane Smith but he was beaten back by a special anti-repellant spray which Sarah uses against him. When he fails, Mrs Wormwood informs him that he will become food for the Bane Mother.

Name: Mrs Wormwood
Played by: Samantha Bond
Home Planet: Unknown
Species: Bane
Appeared in: Invasion of the Bane
More Information: She is the head of the Bubble Shock! company, which is in reality a front for the aliens known as the Bane. The Bane are disguised as humans as part of a plan to invade Earth. She oversees the creation of the Archetype. She knows of Sarah Jane Smith by reputation prior to meeting her for the first time in "Invasion of the Bane", and therefore summons Sarah to her office when she is found intruding in the Bubble Shock! factory. She reveals her true form to Kelsey Harper, before wiping her memory and sending her home with Davey, allowing him to pursue Sarah Jane. When the factory explodes she is seen escaping from the Bubble Shock! factory and swearing revenge on Sarah Jane Smith.

Name: Bane Mother
Home Planet: Unknown
Species: Bane
Appeared in: Invasion of the Bane
More Information: The Bane Mother is a very large Bane hidden in the roof of the Bubble Shock! factory controlling the Bane invasion of Earth. She is disturbed by Kelsey Harper's mobile phone and eventually destroyed in the explosion caused by Luke Smith's activation of the Arcateen 5 alien's summoning device.