>>96667421
My genuinely autistic friend from my long-running RPG group that's been together about 15 years now.
>comes up with vaguely interesting premises but never fleshes them out, resulting in the first 1-3 sessions having decent plot and then it's barebones filler for 2-6 months before he gets bored and throws us into the final bossfight
>very little ability to come up with things on the fly, often just goes "ehh, uhh, I'm not sure, I didn't plan for that" if the PC's deviate at all from what he had planned out
>his idea of challenging combat encounters is adding tons of basic enemies, buffing their HP until they're all damage sponges, and upping their AC to make combat-focused PC's hit roughly 1/4th of the time - even the most basic combats will take 2-3 hours
>gets petty and vindictive if the players are doing "too well", will very obviously fudge his rolls
>has an autistic fixation with inserting generic-brand batman and the joker into every one of his games, got very mad the one time we killed not!joker for terrorizing a city and killing a dozen people
>9/10 the final encounter is the PC's dealing with the big bad's #2 guy while his DMPC heroically faces the real villain on his own
The weirdest part to me though is that despite being a dogshit DM he's a great player, he'll happily jump into whatever role he's fulfilling in a party both mechanically and RP-wise, he takes initiative and often leads the party, does a decent job thinking through problems and encounters, etc.