Name Source Type Oans DC Comics An ancient humanoid species and the founders of the Green Lantern Corps. Oannes Babylonian mythology Humanoid Oankali Octavia Butler's Xenogenesis series Oasian Roswell New Mexico Ob'enn Schlock Mercenary Ocampa Star Trek Humanoid Oculons Ascendancy Humanoid Ogri Doctor Who Ogrons Doctor Who Humanoid Old Ones Warhammer 40,000 Olive Adventure Time: Distant Lands Shape-shifting service droid Omicronians / Popplers Futurama Ood Doctor Who Squid-like Humanoid Optera Doctor Who Orandoans DC Comics' Legion of Super-Heroes A humanoid species from the planet Orando. Legion member Princess Projectra is an Orandoan. In post-Zero Hour continuity, the Orandans are snake-like aliens, with Sensor being their representative. Orfa Ascendancy Organians Star Trek Energy beings dedicated to stopping all forms of violence.OrgalorgAdventure TimeA malevolent primordial space deity who takes the form of the penguin Gunter. He is from an unnamed slimy planet. Ori Stargate SG-1 Humanoid, Ascended to a higher plain of existence in non-corporial form Orion Star Trek Green-skinned humanoids known for the illegal trade their extremely attractive females as slaves. Orion Rogues Battlelords of the 23rd Century Orions Master of Orion Orishan Ben 10 A race of mollusk-like humanoids from the desert planet Kiusana in the Andromeda Galaxy. They can absorb and redirect moisture. Orkans Mork and Mindy Orks Warhammer 40,000 Humanoid Orsians Tracker Ortheans Mary Gentle's Golden Witchbreed Humanoid Ortog Star Control Orz Star Control Oscar Tommy and Oscar Fun and weird pink alien. Oscillator Adventure Time: Fionna and Cake Osirians L. Sprague de Camp's Viagens Interplanetarias Series Telepathic saurians. Outsiders Larry Niven's Known Space Overlords Childhood's End by Arthur C. Clarke Creatures with the appearance of demons that help shape the evolutionary patterns of other races. Owa Star Control 3
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