So I'm developing new characters for my comics, and I keep running into the same problem. Mainstream comics already have the same names for other characters.. I tried Supernova for cosmic manipulation, and there was already a character named Supernova. Same with Firestorm, Hazmat, and Hazard. Now with Hazard, there is a character in both Marvel and DC. I was just wondering, can I still use the name(s) or will that be a form of copyright infringement?