Buffmillion is a type of large Vermillion, acting as the tribe's heavy troops. Unlike their smaller brethren, their only humanoid feature is their bulky torso and arms; they have a large tail instead of legs, four tendril-like snake tails for hands, and four Vermillion serpents for heads.
Described as silent, relentless, and monstrously strong, Buffmillion serve as the muscle of the Vermillion tribe.
Ninjago.com Description
These rare four-headed troopers are the biggest, meanest Vermillion Warriors. With their superior strength, the Buffmillion are well suited for jobs that require heavy lifting or fights that need overwhelming force. Always focused on their mission, they go about their duties silently and relentlessly which, combined with their large size, makes them the toughest Vermillion to stop. One particular Buffmillion accidentally remained behind in NINJAGO City after the completion of Operation Heavy Metal.[1]