5

Description
5 is one of the Gods in Shaderston lore, G being the second. 5 first appears in Season 1, Episode 5, where Shaderston accidentally summons 5.

Lore
5 is one of the Gods that the Number Cult worships. Like G, 5 was destroyed in 1002 C.E when the Number-Letter Wars broke out between the Number Cult, and the Lettermen. 5 was created by the Number Cult as a guardian when the Alpha-Bet used to terrorize Earth. Soon after 5 was created more numbers appeared out of a Number Dimension portal.