Teenage Mutant Ninja Turtles Season 4 Episode 22 - The Power Inside Her Episode Title:The Power Inside Her.Episode Description:Despite Leonardo's uncertainty, Donatello decides to do tests on April, but only ends up in further increasing her psionic abilities and being possessed by the corrupted spirit of an almighty elder Aeon from within the Sol Star fragment, by the name of Za-Naron. In the end, April succeeds in regaining control, putting an end to Za-Naron and breaking the Sol Star fragment. She apologizes for not listening to what they had warned her about the influence the crystal fragment had on her; particularly Donnie. She assures everyone that even though she can no longer harness the great mystical power of the Aeons, she now has a better understanding of how to control her increasingly powerful psionic abilities.