It's part of the final battle of the Grave Danger Quest.
Damage Taken From Elements
The Red Knight never retreats.
The Red Knight does not take any direct damage from players since its immune to all elements but Drown Damage. To kill it, you must kill the Vampiric Bloods near the boss. The vampires explode dealing Drown Damage which will damage The Red Knight. The players can use Diving Equipment to avoid this damage.
- This creature drops no loot.