Shizuo Heiwajima

Shizuo Heiwajima (平和島 静雄, Heiwajima Shizuo)

A guy who wears a bartender's suit who has an incredibly short fuse and insane strength. He injured his muscles trying to pick up something heavy when little, which broke down the mental limits that people usually impose to their muscle & uses them in full potential. He hates Izaya for framing him for a crime in the past.

Ironically, his name means "quiet man, peaceful island."

Anime
Anime specific spoilers about this character per episode.

Episode 01:

Episode 02:

Manga
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Volume 01:

Light Novel
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Volume 01: