Tank mentality.

[Akubikumo]

Nope. From my experience, they're the worst out of the bunch.

In fact, it doesn't even matter. No matter what role you are, you have the potential to be a negative player.

Have to agree here, though it's only anecdotal. The most unpleasant, nasty, SOBs I've dealt with have all been WHMs. Which, at first, was totally baffling. But now it makes a sad kind of sense. DDs tend to be the quietest of the bunch. Tanks are hit and miss, though I mostly see 1 of 2 kinds: Friendly, sincere and inexperienced or salty, gruff and world-weary. Yet I rarely come across one without a sense of humor, which can really make or break a bad situation.