More Hero than Thou / More Expendable Than You: Often his reasoning is that he’s just another Glass Cannon, Misty can theoretically resurrect him, and she’d be safer with Ash or one of the other less-squishy folk protecting her than if the mage was protecting her. He makes several of these sacrifices, but being a lucky bastard, he manages to survive anyway.
Undying Loyalty: He is fiercely loyal to his friends. Since they need each other in order to survive (especially since he relies on Ash to protect him and Misty to heal him), this is justified.
Write Who You Know: The reason he’s a fire mage is not only because it works for the plot, but because fire mage was, at the time, the only class-spec combination the author knew well enough to write as a main character.
Misty Waterflower
Fake Defector: First she acts as a double agent pretending to be Scourge, then she is pretty much forced into a Shoot Your Mate situation, making it look like she really has gone to the dark side.
Heroic BSOD: Several small incidents of this, with the first being after her first kill, and the largest being after James compares her to the Lich King and threatens to kill her.
Incorruptible Pure Pureness: Again, it comes with being a paladin. Or so it seems. She comes dangerously close to corruption multiple times.
Jeanne d'Archétype: Misty is a normal girl in her own world, but becomes an armored, sword-wielding holy warrior when she gets the Call to Adventure. She later leads at least one charge into combat. Sound familiar?
Took a Level in Badass: In the anime he is originally from, he’s a wimp. He remains so for the first couple chapters he appears in. Then the Scourge gets him…
24-Hour Armor: He’s dead and doesn’t care about comfort. He also doesn’t sleep.
Dark Is Not Evil: Jessie uses curses, hellfire, black magic, and summons demons. She fights for the good guys.
Only in It for the Money: While she technically is in it for defeating the Lich King, she repeatedly expresses a desire for gold rather than questing for other reasons.
The Chick: Jessie has very little personal usefulness before or after outland (where her knowledge of demons is important), though she has her moments such as when she saved James from a ghoul, and when she befriended Sylvanas and the undead Forsaken. Otherwise, she’s mostly just extra firepower.
The Older Immortal: She’s the oldest of the lot, at three hundred years, where the other main character immortals are under a hundred (or in Kai’s case, undefined but certainly less than two hundred).
Wolverine Claws: Starwisp’s offhand weapon is a bladed glove.
Zaraia Pentalon
Broken Bird: She’s had her heart broken a few times too many, among other things.
Break the Cutie: She was a happy, bright-eyed elf before the Scourge came. Her life went to hell from there.
Dark Is Not Evil: He’s far from evil. He’s just arrogant, is all.
Hero of Another Story: His team has clearly had plenty of adventures of their own, and only happen to get involved with the main characters later in the story.
Lady Killer In Love: With Wendy, who may or may not return the feelings. This does not stop him from being a shameless flirt with all the other girls his age.
Knife Nut: Her daggers are Poisoned Weapons, no less, and she enjoys finding ever new and creative ways to poison her enemies. Yes, this is a hero. Cross another villain stereotype off the subversion list.
Tragic Dream: He can never be a paladin, because he’s a death knight. Or so it appears. At the end of the story, he manages to get one bolt of holy power out.
Iridi
Flat Character: With so many characters to establish the personalities of, someone was bound to get the short end of the characterization stick. Iridi was that unlucky soul.
The Dragon: Figuratively. He plays this role, characterization-wise. In terms of difficulty and threat, Sindragosa is more of a Dragon than he is, in more ways than one.