Some references. Arcane often flirts with women, once even hypnotizing a woman with the intention of molesting her (they are interrupted). A nudes woman creature is featured (Legend of the Swamp Maiden) but only shoulders, upper back and thighs shown as she is obscured by water, trees, and grass.

Arcane often uses words like "hell," and "damn."

The series has a very dark tone overall, with multiple deep themes of remorse, identity-crisis, black magic, fear, and murder permeating throughout.