Another Character for TMNT 2012. This one is not original, but I will let you identify her for yourself @Dimensionjumper5000.
Josephine or Jo to her friends was a snorkel Diver who worked at the New York aquarium, specializing in taking care of Killer Whales. She was soon caught in the middle of a mutagen haul when the Kraang attacked the Aquarium hoping to fins DNA samples for mutagen experiments and got into a fight with the Turtles. The Turtles fought to protect the animals and Jo, but in the end while trying to protect her favorite orca, she was struck with mutagen and mutated into a Killer Whale, dubbed Jo Orca by Michelangelo. She then furiously tore throught he KRaang Droids and drove them off. She thenked the Turtles for helping save her animals and continued to take care of the Orcas, people just thinking her new look was just a costume. She later was taken in by Lumberscratch's team, M.E.C.H. as their submersibles expert.