Outis based on Odyssey
Ancient Greek origin of the pseudonym
The Homeric hero Odysseus used the pseudonym "Outis" when he was fighting the Cyclops Polyphemus and the monster demanded his name. Odysseus replied instead that the pronoun was his name in order to trick the monster. After Odysseus had put out the monster's eye, Polyphemus shouted in pain to the other Cyclopes of the island. When they shouted back, inquiring whether Polyphemus was in danger, he replied that "Nobody" was trying to kill him, so presuming that he was not in any danger, none of them came to his rescue. The story of the Cyclops can be found in the Odyssey, book 9 (in the Cyclopeia).
Use of the name "Nobody" can be found in five different lines of Book 9. 
First of all in line 366: