The Disney-fied version of Hades probably makes more than a few Greek mythology scholars blanch, but James Woods is such good fun, it's hard not to enjoy the character. Snarky and obsessively bent on destroying Hercules (seriously, Hades, Herc's not worth the effort!), Hades spends the majority of Kingdom Hearts II plotting ways to make life miserable for that virtuous posterboy for bland heroism. And that's where Auron comes in.
"Did you forget who you're talking to? I'm the Lord of the Dead!"
The Disney Hades is not particularly scary or imposing, so it's no surprise that Auron has no trouble standing up to him. Immediately upon being raised from his Underworld prison and solicited for a job, Auron refuses and makes ready to fight back. In fact, the only way Hades can get Auron to cooperate, albeit temporarily, is to steal Auron's free will (just how does he do that, anyway?) and trap it in a (cute) wooden statue. From there on out, Auron is forced to battle Hercules in the Underdrome while Sora and his buddies fight to steal the statue back and save Auron's self-respect (like a fight between Hercules and Auron is any contest at all!). Luckily Sora and the gang are up to the task, and Auron is saved from Hades' machinations. Thereafter Auron hangs out at the Colesium as an optional party member and has no further interactions with Hades. Their face-offs may be amusing, but it certainly says something about his cool factor that Auron is much more imposing and badass than the Lord of the Dead.