So, I’m not the biggest Superman fan, but I do know a couple (I once got the entire breakdown of all the Smallville seasons in one car ride). I love the idea of the Blob aspiring to Superhero-dom, and Superman just seemed fitting. I don’t think Batman would work, as the utility belts seem too bulky, and Spiderman is certainly out. But for some reason, the idea of a Blob changing in a telephone booth was hilarious to me.
Enjoy your day!