An unidentified member of the Titanus Kong subspecies, also known as The Rival, appeared in the graphic novel Godzilla Dominion where he is revealed to have once battled and defeated Godzilla, before being killed by Tiamat at some point after.

Tier: 6-B

Classification: Prehistoric Ape, Godzilla's Rival, Titan

Powers and Abilities: Superhuman physical characteristics, longevity, regeneration (At least low), natural weaponry (Sharp teeth), enhanced senses, large size (Type 2), camouflage, acrobatics (Kong's are great climbers and they can jump long distances), resistance to radiation

Attack Potency: Country level+ (He was able to fight, defeat, and then drive a younger Godzilla out of his lair, leading to Godzilla proclaiming him as his rival)

Speed: Likely Subsonic+ travel speed (Can keep up with Godzilla), possibly High Hypersonic+ combat speed and reactions

Lifting Strength: Class G (Scaling from Godzilla)

Striking Strength: Country level+

Durability: Country level+

Stamina: Unknown

Range: Tens of Meters by sheer size

Standard Equipment: None notable

Intelligence: Average (Ancient Kong should have a similar level of intelligence as his family, who built the entire temple room seen in Godzilla vs Kong)

Weakness: Like Kong, he did not have any dermal armor, making it easier to hurt him.

Feats:

•Centuries ago, this titanic ape fought,defeated, and drove Godzilla out from one of his Hollow Earth lairs, claiming it as his domain.