They did show Mitchell delivering a frogger(?) arcade machine so a senior could practice for a tournament, which was nice. I think it was an extra in the dvd.
Billy to my mind is a bit annoying but he’s a mild “villain” in the documentary. I mean it’s video game high scores and very compulsive people..
You should definitely watch documentaries, as long as you first watch Orson Welles's masterpiece F for Fake as a pre-req. That or Abbas Kiarostami's Close Up. Then you are free to watch as many documentaries as you please.
Highly recommend Summoning Salt in general. I never thought I'd find video game speed runs, records, etc, interesting, but his videos end up being very entertaining. His pacing, tone, and the way he works in music are very effective.
https://en.wikipedia.org/wiki/The_King_of_Kong