Make sure your character has character flaws, that he doesn't outshine canon characters in areas that they are good at, and don't make other ponies instantly like him without any real reason, and a number of the worse fears people have about original characters will be nullified.
Yeah, superhero movie. But its fine, don't worry. The joke is this: After Tim Burton's massive success for the Batman trilogy in 1989-1992, they decided to give Joel Schumacher a turn at that. He directed two Batman films (one of which nearly destroyed the franchise, but that one's not the one I'm talking about). Batman Forever (this is the one with Jim Carrey in it) and Batman & Robin (the one that nearly destroyed the franchise). Jim Carrey played The Riddler in that movie and most people hated it, despite him being one of the only actors capable of pulling off an outfit like this without looking ridiculous.
So your cutie mark is a flame and not a hammer so still not hammer for you and you arent allowed to break rock whitout hamemr and all hammers on this side of the planets are broke just kidding actualy you're a carrot now.