Kilmie Back is a non-canon pirate who appears in the game One Piece: World Seeker. He picks a fight with Luffy while the pirate is on his way to meet Jeanne.
Kilmie cuts an imposing figure: a hulking, muscular man with tanned skin and long brown hair pulled into a ponytail bound at two points, plus a spiky brown beard. A large dragon is tattooed over his chest. Black trousers flare at the cuffs above brown boots, finished off with spiked black shoulder guards and a pale sash knotted at his waist.
Not much of his temperament is known, but his readiness to attack Luffy with barely any prompting marks him as a belligerent sort.
In World Seeker, Kilmie and a band of pirates ambush Luffy, swinging a pair of large double bladed axes whose mastery is unclear. Luffy lands a string of hits and finally puts him down with Haki.

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Kilmie Back is a non-canon pirate who appears in the video game One Piece: World Seeker. He picks a fight with Luffy while the pirate is on his way to meet Jeanne.
Kilmie Back wields a pair of large double bladed axes against Luffy, though his mastery of them is unclear.
Luffy lands a string of hits on Kilmie Back and finally puts him down using Haki.
Kilmie Back is a hulking, muscular man with tanned skin and long brown hair pulled into a ponytail, plus a spiky brown beard and a large dragon tattoo across his chest. He wears black flared trousers, brown boots, spiked black shoulder guards, and a pale sash at his waist.
No, Kilmie Back is non-canon. He appears only in the video game One Piece: World Seeker and not in the manga or anime.
Looking for more on Kilmie Back? The One Piece Wiki on Fandom has a dedicated page with community notes.
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