From the post:
Greetings HeroClix Fans!
Welcome back to your Clix fix as we preview more exciting figures for the Teenage Mutant Ninja Turtles HeroClix: Shredder’s Return set! This third Gravity Feed set adds even more characters from the 32-years of TMNT history, based on both the comics and animated tv series. Today we have a visitor from an alternate universe, Master Sliver!
In a twisted reality where the famous foursome of Turtles have amazing superpowers, their sensei Splinter is also twisted – an evil master named Sliver!