Permanent Tortoise Mimicry is the power to turn into a tortoise. The intelligence of the original person is maintained regardless of the new body.
Mark has this power. He is trapped in the body of a tortoise and is a member of the Power Support Group. Due to his inability to speak, not much is known about him, but he seem to demonstrate full human intelligence including the ability to read and understand speech. Tim tells Abby that his name is Mark and that he always comes to the power support group. Abby then takes Mark with her and keeps him in her locker at the community centre. She also tries to convince Alex to have sex with him to turn him back to normal, but Alex refuses. His power is (temporarily) reversed when Abby gives him ecstasy.
- Human Mimicry - The power to allow an animal assume human form.