I was fighting my way through that Onyx Serpent gate (oh Roarmulus Twins, why must you be at the end of the worst gate around?) and encountered a Devilite who was apparently bugged because he promptly told himself that "He could use a guy like you/(himself) in Management" and turned himself into a Yesman despite there being no Pit Bosses around.

And then I went to the next depth and it was stuffed to the gills with DevilITs (needless to say, much rage was had).

Sadly I didn't get a picture of the little guy thanks to a button mispress.