[quote=@ImportantNobody] Everyone would kill me if I used a half demon to fight them. Tempting... It could actually be funny to have someone who doesn't believe on angels fighting them. [/quote] Have some half-dragon/bat, with their usual bat-like wings or a goat with their horns. Then have both of them misunderstood what the other is, so the angel is some bird person while the opponent is some demon.