Asmodeus has a job for Apollyon (Patreon)

While acting as a guard wasn't exactly the main thing Apollyon was known for, it could happen under certain circumstances. Asmodeus can't resist his urges for long, but the big war robot doesn't normally have the equipment to please him. Scientist Gods Make Do.

Apollyon is incapable of differentiating types of touch, so this experience doesn't particularly mean much to him, but if it helps someone else, he's fine at least indulging them for a time. None of these porn sketches are canon, but if I had to place it, it'd have to be before Apollyon's war service was over, as Apollyon didn't have much of their own opinions and just did as told.