Just to have at least one game without one of the most boring and cliché characters, lol.
And who did you think the Katarians were?
Suggest something interesting. Is a Healer not cliché? Is a Rogue not cliché? Hmm... maybe a Warrior-Barbarian isn't cliché? Is a Hunter not cliché? Hmm... The very presence of in-game skills implies some combination of them - for convenience and to create a powerful character. And all of this has long been invented - that's why it's cliché. But it's also effective.
No, you can, of course, mix things up - a warrior with healing magic and invisibility, but that's just a cliché paladin, or who knows what you'll end up with.
Who did I imagine them as? I don't know, I associate warriors from the Dungeon more with assassins, and Katarians more with powerful fire mages and all that.