Redeye Big Oaf
From RoR Wiki
Redeye Big Olaf is the first boss in the middle wing.
He needs to be killed to gain access to the wings' endboss room.
His encounter is a public quests, so gold bags include the gloves and boots of the Redeye Set.
Tactic
The only real mechanic is that Big Oaf punts your group upwards, so he needs to be tanked under the hut at the right wall.