>>96048601The books sort of hint that he had some sort of Flatland novel backstory where he was enlightened about the nature of reality, and tried to "liberate" his home dimension but wound up destroying it instead, went mad with guilt and now lies to himself about everything all the time time until he doesn't remember "that they aren't lies anymore." So he seems to have had some psychotic break where he tells himself he actually succeeded with the first dimension's "liberation" and wants to repeat it to "free" another dimension while on some level he realizes what he has done and is miserable, but he pretends he is not.
This was however only in the show in like a five second line so for all purposes he's randumb for the evulz. Meanwhile I think a grand total of one fanfic actually does anything with this backstory despite Bill being in approx. 99% of all fan works for Gravity Falls though he was only in about 3 episodes, however they are all just gay porn and no backstory. I guess reading a Victorian novel about speculative mathematics and theoretical extra spatial
dimensions isn't too appealing.