Arcade Gangplank??

Maybe Secret Boss Gangplank, but not part of the Arcade Creew, that's for sure.

That's not GP anymore, that's a random pirate nub.

Gangplank is her rival. She just tried to kill him after all.

hmm so maybe he tries to get her back for what she did but his costume looks kinda different

No

Been wanting them to make an arcade based GP for years now. I mean, they went through the effort of putting M. Bison's symbol on his hat and they made his sleeves torn to resemble all of the shoto characters from Street Fighter, and in this case of GP being a villain, Akuma specifically. I don't see why they wouldn't make this skin. Other skins in the backgrounds of others have been made (I.E. every battlecast skin)