Oretina (also known as Ortina) is one of two mini-bosses of the Nightmare Circus. As a lion tamer, Oretina rides a large male lion to battle and is able to summon lionesses to aid her. Her attacking style is similar to Aron's.
Nearly all of Oretina's attacks involve the lion. With the lion, Oretina can cause it to charge forward, damaging all players in her path. She can also make the lion jump three times in rapid succession, knocking players upward if they are not in the air when the lion lands. Oretina may also attack twice in front of her.
Oretina is also capable of summoning a Lioness on occasions. While Oretina remains alive, all lionesses in the room will take less damage from the player's attacks.