Oodan are small, brown creatures quite similar to a real-life apes. Their small, dark hands and feet are preceeded by lighter tufts of fur on the wrists and ankles. The fur along the sides of their back flares upward and spikes run along their spines. They also have bright, thick eyebrows and tails which curve upward.
Oodan will wander around slowly, and clap their hands together over their head when spotting an enemy, whether they be ARKS or Darker. They will place their fists on the ground so that they can fling themself around, and use one of two attacks periodically.
- A basic swipe using one claw
- After a brief wind up, will fling itself forward
- The English demo of Phantasy Star Online 2, playable at PAX East in 2012, referred to this enemy as "Woodan"