MechaTarrasque
Hero
A couple of the NPC warlocks have 4e-style transformation abilities. Instead of transforming into a lot of different things like the druid, it turns into one thing that gets stronger as the warlock levels up. There are no shortage of fiends, abberations (for the GOOlock), and maybe a yeth hound for the feylock that the forms could be based on...
I would base the damage on the barbarian (but using cha instead of strength ala the hexblade). Invocations for out of combat abilities make up for the nontransformed warlock being squishier then the non-raging barbarian (maybe make the transformation take an action).
I would base the damage on the barbarian (but using cha instead of strength ala the hexblade). Invocations for out of combat abilities make up for the nontransformed warlock being squishier then the non-raging barbarian (maybe make the transformation take an action).