User blog comment:RRabbit42/Marvel Halloween costumes for the characters/@comment-406459-20101018175320

I can see Phineas, Ferb, Buford, and Baljeet as the Fantastic Four: Phineas as the Human Torch 'cause he kind of a take-charge kind of guy, Ferb as Mr. Fantastic because he seems like the type who'd use elastic powers, Buford as the Thing for obvious reasons, and Baljeet as the Invisible Woman because he had no say in the matter and the other three were already taken.