There's something hulking and sinister about him on screen that makes the bad-guy thing just work. As Butch Gilzean (and Solomon Grundy) in Fox's hit series Gotham, Drew Powell represents the old-time brutal criminal who paved the way for the super villains of Batman's prime to take over. Gotham, the Batman backstory, tees up the second half of its third season this week (1/16, FOX, 8 p.m.). In light of the occasion, I asked Powell to sit down with me for Fortt Knox to share his own backstory. It's worth paying attention. For kids with visions of stardom, Hollywood dreams rank up there near hoop dreams in the unlikely category. There are only so many hit shows on TV, and so many recurring roles. So how did Powell make it? There's not a formula, exactly, but there are a few lessons for anyone pursuing a passion that has long odds.