Atom Smasher, is a lot like the X-Men's Colossus: He's big and strong, but conflicted, and has made terrible decisions. He has been a villain a couple times (at least once) and his best arc was him acting as a mentor to young members of the JSA so they wouldn't make his mistakes.
NEVER! Magneto. Like Mystique, he has always had his own agenda that has at times allowed him to work with others but usually, he tends to want to do his own thing. He is never to be trusted. For this, he has earned a NEVER!