Everyone else: do I have my taxonomy right? Is Gabe a troll or some related creature?
Well... you know how ducklings tend to "imprint" on a parental figure, and identify as whatever that is? Gabe is a troll that was raised by humans, so he thinks he's a regular person. The fact that he's the common factor in his (numerous and frequent) unpleasant experiences online doesn't seem to have occurred to him.