Shadina The Hedgehog is a 2005 Sega platform game and spin-off of the Sonica the Hedgehog series. The game follows Shadina the Hedgehog, a mysterious hedgehog with amnesia, as she tries to discover her past during an alien invasion and a three-way war between G.U.N., Eggwoman, and the Black Arms. Shadina can choose to help any of the sides, and the player's choices determine the plot and playable levels. The game features fast-paced platforming, ring collecting, and third-person shooter elements, and Shadina uses various weapons to defeat enemies and complete missions. As the game progresses, Shadina learns the truth about her past, including that Gerald created her using Lady Black Doom's blood, which lady Black Doom uses to control her. Shadina eventually defeats Lady Black Doom and chooses to move on, and in Sonica the Hedgehog, she is depicted as having joined G.U.N and being part of team dark and the freedom fighters. Shadnia's friends are Omega and Rouge The Bat that are part of team dark. Her only rival being Sonica The Hedgehog while the people she hates it's mostly Eggwoman, Mephiles The Dark and Infinte The Jackal.