Some fun facts about Akuma here:
The dimension that Akuma resides in the most(as he frequently switches) is Dr.Megalo!Alphys's AU. She and Akuma have a shaky partnership that was established by Akuma's 'student' Slasher!Chara.
He commonly travels alongside Slasher!Chara of the AU Underdistrict and Terror!Sans of the AU Grimmtale, destroying a world's link to its Creator.
Dr.Megalo!Alphys is the one who built his AU travel stopwatch, stopping him from being magically tracked by any Ink outcodes.
Despite having become much more active after the events of his AU, Akuma is still at heart a Sans, and thus, lazy when the situation isn't dangerous or tense.
He is classified as a Grade 1 Outcode in the Adamsphere.
Akuma has met and allied himself several times with the ALIVE cast in TAV.(this is of course just about the TAV version of the ALIVE cast and not the actual ones).
Artwork above is done by @nonelivingmood
