Octoroo is one of Master Xandred's two followers, an eldery cephalopod-headed figure with a staff. He tried to open a portal through a well by having a Nighlok steal toys from children. He once came out to the surface to poison Jayden and ended up fighting Antonio. He has long tentacles he can use to wrap around people and electrocute them. He then uses half of his life to power up the Nighlok of Gigerox and give him a deadly third life. He was last seen in the ship as the Sanzu River was drawn back.