Does Karai Get Cured?

Karai does not get fully cured; she undergoes a unique partial transformation, retaining some significant mutant traits.

While Donatello held hope of creating a retro-mutagen to completely reverse her mutation, it was revealed that Karai is a special kind of mutant. This unique physiology allowed her to transform almost entirely back to her human self, yet she permanently retained specific features from her mutation.

The Nuance of Her Transformation

Despite reverting largely to her human form, Karai continues to exhibit distinctive serpentine characteristics that set her apart from being fully "cured." These enduring traits include:

• Greenish Snake Eyes: Her eyes retain a noticeable reptilian appearance.
• Venomous Fangs: She keeps her fangs, capable of delivering venom.
• Prehensile Tongue: Her tongue remains prehensile, allowing for an extended reach and manipulation, typical of a snake.

This status means she exists in a state between her full mutant form and her original human self, highlighting the unique nature of her mutation.