Sunnyboii12

the Behemoth is a massive, iguana-like titan, often described as the largest of the "Giants," that measures hundreds of kilometers in height. This colossal creature is characterized by a huge, mountain-sized head, gigantic teeth, and a distinctive metallic, serrated backspine. Behemoth is a powerful force of nature, considered a protector of mountains and a part of Earth's natural defense system, feeding on weaker titans and mountains to maintain balance, despite its immense destructive potential. 

Size: The Behemoth is enormous, with some sources estimating its height to be around 800 kilometers. 
Appearance: It resembles a monstrous, whitish-gray lizard or iguana, with an oval-shaped head, a large mouth filled with jagged teeth, and pitch-black eyes. 
Body: Its body is covered in an unbreakable, serrated backspine made of metal and granite.