Octogon

is the OoA: of OoA:, the sixth OoA: in.

Characteristics
OoA: is a variant of an OoA: battled in a water-filled room with a narrow strip of land in the center, on which there are two NaN Jars that drop NaN Scent Seeds when broken. OoA: circles the room while facing away from OoA:, using its large shell as a shield against OoA:'s attacks. When OoA: turns around to spit a rock, OoA: can use his OoA: or OoA: to strike the OoA: in the face. The OoA: can also be used to bounce NaN Mystical Seeds off the walls and damage OoA: while it faces away from OoA:.

After being hit several times, OoA: will partially submerge in the water while still circling the room, forcing OoA: to follow it underwater with the aid of the OoA:. If OoA: remains above water while OoA: is submerged, or vice versa, OoA: will begin to shoot fireballs from its blowhole, which rain back down and split into multiple fireballs.

When both OoA: and the OoA: are underwater, it will begin to attack by chasing and ramming into OoA:. Periodically it will spit an air bubble which entraps OoA: for several seconds if hit by it. OoA: can damage OoA: with the OoA: as he attempts to swim away from it. After several more hits, OoA: returns to the water's surface to repeat its plan of attack. Once OoA: is defeated, a OoA: appears and the door to the OoA: is opened.

Trivia

 * Through the use of a glitch, OoA: can damage OoA: with his OoA: while the OoA: is submerged.