The Eagle King, sometimes called Bald Eagle King, is the ruler of the eagles, and has been in all of their collective forms. He's distinguished from his minions since he is the only one with a white body. He also is a great strategist since his minions seem great at teamwork, like the twister, the sun trick, skeleton, hen guns, bat shurikens, Ostrich Wheel, Black Dragon, etc. He is probably one of the most prominently seen animals with his minions. In "Air Battle, he was transformed into Bald Eagle King, in "Bald Eagle Castle", he was transformed into Ostrich King.
In the episode The Return of the Pterodactyls Twin Masters used a special sap from an ancient tree has been transformed into Pterodactyl King. In the episode "The Yeti & Phoenix", Twin Masters transformed Bald Eagle King into a phoenix till the end of the end of the episode. Bald Eagle King (alongside Polar Bear King) joined up with Big Green.