Steve, turns out, wasn't exactly Styx's ferryman - that was Charon - but his apprentice. Far less bound by rules than his master, he was happy to help with anything that'd make his day less boring.
He was even happier when he heard who they were looking for.
"Yo, Calli? By this time she must be with the skeletons kicking ass!"
"Kicking… Ass…?"
"On RAP, man! She's sick! Y'all never heard Calli with a mic? Oh no. Let's go now."
Steve seemed to like Calliope – Death's apprentice reaper they came to recruit. It wasn't at all what they were expecting.