One of us ( TMNT 2K12 DR )

Sylwanin was experimented on by the Krangg as a baby taken from her home Salamandria, the reason they experimented on her was that the Krangg was trying to make a weapon to protect themselves from the Triceratons. But one certain Krangg name Bishop saved Avani and hid her in New York City, grew up in New York City alone and afraid but as she grew in New York City she trained herself to become a fearless ninja by disguising herself as new york's only savior. She was the only mutant and the best ninja until she sees four Mutant Turtles who are also ninjas fighting her enemy. . . The Krangg.