Dr. Bofoi (ボフォイ博はか士せ, Bofoi Hakase), also known by his hero alias Metal Knight (メタルナイト, Metarunaito), is the S-Class Rank 4 of the Hero Association. Besides fighting, Bofoi also provides many services for the Hero Association, such as weaponry sponsorships and facility construction.

He's also one of the few people aware of Saitama's strength and has started to spy on him, since he considers Saitama as a potential future threat to his rank.


"Also, I am not Bofoi. I am "Metal Knight."."