So apparently some TF related stuff although rarely any real process appeared in the Avengers Assemble show.
https://www.youtube.com/watch?v=tteCir60_DI This episode features body swapping between the Avengers
The Dark Avengers Episode features created Evil avengers
the Age of Tony Stark features a deaged Tony.
Also in the comics front we have Totally Awesome Hulk Amadeus Cho who can turn himself into a Hulk.