Eijiro Kirishima is from the popular anime series, My Hero Academia. Eijiro's Quirk gives him the power to harden and sharpen any part of his body. The ability not only protects him from physical attacks, but also from heat and shock waves. The drawback to his Quirk is that there is a limit to how much damage the hardened skin can withstand and will cause the hardening to slowly dissipate and lose stamina.