Risa

With a personality like Moriarty’s, at least one is guaranteed to attempt gaining dominance over the others. And with a character background like his, that inevitable situation would be expected by all.

So even if they all start out working together for a larger purpose, the idea of the inevitable fight would irk each enough to drive a few into elaborate schemes to come out on top.

The irony will likely be in they will all try killing one another until only the last Moriarty, the true one lol. But I’m half awake and this feels like a potentially good Lower Decks premise.