DRK definitely kinda missed the identity boat, but I'd say the other tanks hit on it pretty well. WAR is the batshit insane berserker that just won't die, PLD is the holy knight that protects and heals, and GNB is a combo mad lunatic with a mix of Squall and Seifer's movesets and a penchant for condemning everyone that plays it to develop carpal tunnel after a while.