A "woobie" is a name for any type of characters who make you feel extremely sorry for them. Basically, the first thing you think to say when you see the woobie is: "Aw, poor baby!" Woobification of a character is a curious, audience-driven phenomenon, sometimes divorced from the character's canonical morality. And while it's technically a YMMV trope, it's hardly tough to spot the guy the writers intend them to be, considering all the bad stuff that tends to happen to them.