King Kong (New Age of Monsters)

King Kong is a giant prehistoric ape Kaiju from Godzilla: New Age of Monsters. He was first mentioned in Avengers vs the Gammas and appeared in season 5.

Origin
Kong is a giant ape and the only member of his kind to be alive on Skull Island.

War against the Skullcrawlers
Kong has protected the natives of Skull Island from the Skullcrawlers, two-legged reptillian monsters that fought against Kong's species until they were wiped out.

Battle with Godzilla
At some point during the 1970's, Godzilla traveled to Skull Island as he walks on and takes a look around and encounters a Mother Longlegs, Spore Mantis, several Skullcrawlers, and finally Kong himself. As the two monsters fought against each other, Godzilla and Kong put their differences aside when the Alpha Skullcrawler shows up on the surface of the island and meets his demise at the hands of both Godzilla and Kong. After the battle, Kong allowed Godzilla to leave Skull Island as the nuclear behemoth made his way to the ocean.