Marugori

Beefcake (マルゴリ Marugori) was a regular human until he drank the Biceps Brachii King steroid from his older brother, Oldface, which turned him into a mutated giant.

Appearance
As a human, Beefcake was depicted as a buff young man, with a large torso and muscular arms. He had very sharp eyes and a shaved head. It seemed that he preferred wearing tank tops and plain jeans. These clothes were ripped off when he transformed into a giant. When transforming, his veins were popping, muscles expanding and his size grew incredibly. As a giant, he resembled a typical giant from Shinkgeki no Kyōjin, steaming, with a white, bone-like armor covering his enormous muscles. Most of his skeleton and muscle tissue became visible, including his tendons. He also grew two tubes, protruding from his chest and running over his shoulders to his back.