Octus

Octus is one of two bosses at the Xenia Border, the other being Lenasian. Players can choose which boss they fight, depending on which path they take at the room they must jump across. Octus is one of the bosses that players must kill to obtain one of his fangs for obtaining Amy with the Worn-out Amy Mission, but his fangs, like Lenasian's claws, do not drop every time.

Depending on the characters and class used, along with experience of both bosses, Octus may be harder or easier than Lenasian. Octus and Lenasian have been taken control of by Ascendant God in order to attack the Grand Chase in an attempt to halt the journey to the next area of the continent. The first encounter with Octus is a prelude to the actual boss fight, which consists of Octus once more, but at a higher level, thus having a bit more health, defense, and attack. He is also able to summon monsters in the second part of the fight.

Attacks
Octus commonly either does a four-hit combo, a ram, or slams the ground. Sometimes he uses a roar that will go to the edge of the screen in the direction he is facing. Weaker players can be easily killed by this, but this attack can be avoided if one uses a skill, is behind Octus or uses a Reflect marble that Arme can create when she uses her third grade white magic skill as an Alchemist.