We've looked inside the shell, but what about out, with the mammals who always have the backs of our turtly teens. With the eternal wisdom of their trainer man turned rat/rat turned man (depending on the version) Splinter, ever iconic support (and sometimes reporter) April O' Neil, and chaotic muscle of Casey Jones (GOONGALA!), we look at the evolution of this trio that's changed even more drastically than the turtles over 30 years.