Well, there's a definite dickish streak to his early interaction with Jade and Obsidian, seen in the first few issues of Infinity, Inc. He's also not very nice to Hal Jordan in Fast Friends, the Barry Allen/Hal Jordan companion to JLA: Year One. As it stands, he's an awesome character and a good guy, but - to me at least - he's the dick of the JSA big three (Jay Garrick, Ted Grant and Alan Scott). Then again, anyone looks like an asshole standing next to Jay Garrick, who might well be the nicest superhero around.