Sarah Jane, Luke, Clyde, Rani and Maria have all experienced first-hand what Planet Earth has to offer. They've had a taste of what's out there and now there's no turning back. Browse through the pages below to discover just how their lives have been changed forever...

Luke Smith Luke Smith
Sarah Jane's adopted son may look like an ordinary human, but he has his fair share of extraordinary talents.
Read his biography »
Clyde Langer Clyde Langer
Cool boy Clyde is always ready to bring the aliens back down to Earth with his quick wit.
Read his biography »
Rani Chandra Rani Chandra
When Rani moved to Bannerman Road, it wasn't long before she found herself caught up with Sarah Jane and the team.
Read her biography »
Maria Jacksons Maria Jackson
Maria's world was turned upside down by her new neighbour's mysterious past times.
Read her biography »