Well they already have a teenage April, Casey and Irma. So why not a teenage or maybe preteen Vernon Fenwick?
Only thing keeping Vernon from returning is that fans hate him for being such a jerk to the Turtles.
Then again, he is being featured in the new live-action film.
Also, as mean and rude Vernon was, it was entertaining to see him get humiliated and pushed around.
What do you think?