Build a horrible character (frankly impressive in 5e, which is pretty simple in terms of choices to make at the start). Like, a bard with 8 charisma, or a rogue with no dex
Or, pay someone else to build their character, and then not know how to play it.
And/or induce the other players to murder him (in the game)
Musk seems like the kind of D&D player who would