Thrym

Thrym (スリュム, Suryumu) is the boss located on the 4 (last) floor of the inverted ice pyramid dungeon known as Thrymheim in ALfheim Online as well as the boss required to be killed for The Holy Sword of the Ice Palace quest. Unlike the bosses of New Aincrad, Thrym's three large Hit Point (HP) bars are visible to players. He is the main antagonist of the Calibur side story.