Complete Monster: The depraved Captain Continental tries to sexually subdue subordinates who take his fancy, and if they refuse him, he Whips them and beats them half to death unless they submit. If that doesn't work, he just rapes them and forces them to participate in various sexual activities with absolutely no remorse. He seems to get sexual pleasure out of breaking, beating up, and raping people, including Jonathan.
Jonathan's refusal to be the Continental's sex slave even as he's being brutally beaten up as well as raped by him. (His "no, no, sir" doesn't come from him wanting Continental to stop, but about refusing his offers).
Leonard castrating the Continental after finding out he raped Jonathan.
Fridge Logic: If the Apocalypse use human brains to power themselves, what the Hell were they using for fuel before humanity found them?
It's hilariously... jarring to see Jonathan's uber-uke and super blushy face as he has his Intimate Psychotherapy session with Leonard.
Those familiar with Takehito Koyasu's voice work will at least giggle when they (easily) recognize him as Jonathan. He may have used a pseudonym, but his very particular voice is impossible to mistake for someone else's here. And it's even funnier because Koyasu keeps doing voice work in R/NC-17 stuff even now...