The Black Mesa Golem Ape

The Black Mesa Golem Ape is an extremely tall and strong alien from Xen. They were named by Tommy, who claimed that he would write the Wikipedia article on them.

They are what ultimately lead to the Wikipedia jokes/lore throughout the series, an ongoing gag of incorrectly naming existing Half-Life monsters, such as the Vortigaunts being named the Ex-wives/Vonneguts, and the Houndeyes being named the peeper puppies.