Garou then slams Mumen Rider's head into the ground, and repeatedly bashes his head into the pavement. It leaves a prominent bloody stain on the ground, and the scene even cuts away from the brutal beating. Mumen Rider then is lifeless in Garou's hands, and is immediately knocked unconscious.

How did Mumen Rider survive?

Enhanced Durability: Mumen Rider withstood an attack from the Deep Sea King, although he was heavily wounded. Mumen Rider also survived having his head smashed into the ground multiple times by Garou. He also took a hit from one of Hammerhead's crew, which caused severe blood loss of his head, but luckily survived.

Who is God Mumen Rider?

Satoru (サトル), better known by his hero alias Mumen Rider (無免ライダー, Mumen Raidā), is the C-Class Rank 1 professional hero of the Hero Association. ... After being offered an opportunity to become a stronger and more effective hero, he joins the Neo Heroes.