Superman - Doomsday. He ****in' killed the guy, you know?
Batman - Yeah, Bane was pretty substantial, breaking his back and all, but I have to say the Joker killing Jason was bigger. You don't come back from that (well, you do, but it's different, and you're a villain. Which is pretty bad too.)
Wonder Woman - Probly that one time.
Green Lantern/Hal Jordan - Parallax warping his ass. Or if you didn't like Rebirth, himself.
Green Lantern/Kyle - Girlfriend in the fridge. What else is there?
Green Lantern/John - Whoever ******* decided it was a good idea to cancel Mosaic. Man, what the ****? I got everything ever published under the banner of Green Lantern, and a lot of appearances in other titles. And let me tell you, none of them is as consistently good, thought-provoking, entertaining, and original, as Mosaic was.
Green Lantern/Alan - C'mon, that guy never loses. He's the most powerful being in the universe, except for Kyle as Ion.
Green Lantern/Guy - Getting pwned by the Guardians. Man, that suuuuuuuucks.
The Flash/Barry Allen - Reverse-Flash. I mean, it wasn't really a victory for him, but it sure was a defeat for Barry. Barry killed a guy, and he really didn't have to.
The Flash/Wally West - Going into the Speed-Force. I mean, he's ****in' gone, ain't he?
Aquaman - Dumbass editors turning the series into Sword-and-Sorcery ****. Well, that, and the worst ending to a story ever for the final pre-OYL issue. Can someone explain to me what the FOCK that ending meant? ****in' seahorses getting big when you feed them? Seriously, man, what the ****?
Nightwing/Robin I - Breaking up with Babs.
Robin II - Gettin' killed in the face.
Robin III - Not getting to his father in time to save him.