The Red Devil is a hardmode enemy that spawns in the Underworld once a Mechanical Boss has been slain. It is a much harder version of the Demon, having more health and dealing out much more damage Similarly to Demons they have a chance to drop a magic weapon, the Unholy Trident,
The Trident attack that the Red Devil throws can cause lots of damage to any type of players. The tridents are fired in a similar way that Demons fire their scythes in, although they are much slower.
- On Console, Red Devils will spawn prior to hardmode, only if a mechanical boss has been defeated prior the Wall Of Flesh.
- Red Devils pose a threat to all players, even end-game players because of the Trident attack.
- Because of their low knockback resist, they can be easily stunlocked with rapid-fire weapons, such as Megashark or Chain Gun.