Jaul

Jaul, Protektor Profundis, is one of the three depth lords. Reachable in third stage of Liquid Black Quest, he is the strongest deepling boss.
"KENH!!" translates to "Intruder!!", and "QJELL AFAR GOU JEY!!" translates to "Qjell watch over us!!".

Jaul cannot be blocked from spawning. Teams can stay in its room for 20 minutes, the timer starts when entering the teleport. Re-entry is denied after players gain experience from it. Thus, teams can earn a few minutes by jumping out and in its lair when the first boss is on deep red HP.

He combos a lot, walks pretty fast, and re-targets a lot.

Attacks in melee range. Jaul never retreats.

Get a decent level blocker or two (250+ is enough), one healer for each of the blockers and several damage dealers and just kill it with your strongest attacks. Note that knights are not only meatshields and should also attack as they do high amount of damage too. Bronze Amulet is recommended because of the Mana Drain Jaul does.