Board Thread:General Discussion/@comment-5808856-20140629125128/@comment-24560188-20140708171546

Vgiannell5 wrote: Halfshell wrote: What nickname will Mikey give her relating to a past character from another universe? I doubt the other turtles will let Mikey give Karai a nickname for her mutant form.

Mikey probably won't because you could see that he was also depressed when he asked Donnie about making a retro-mutagen for her.