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Biceps Brachii King (上腕二頭キング, Jōwan Ni-tō Kingu) is an artificially created steroid drug developed by Fukegao. It is strawberry flavored for easier ingestion.

Overview[]

Biceps Brachii King enlarges the user's muscles so that their body mutates into a gigantic form of immense proportion. The only known user is Marugori.[1]

References[]

  1. One-Punch Man Manga; Chapter 3, page 5

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