Casting in this adaptation is retarded, as expected from Netflix
You see Dragon and wonder how TF you go from Garp -> Dragon -> Luffy
Really tho, Garp and Luffy are both just Brazilian. They don't look much apart. If we are to apply real world logic, probably both mixed with like 70-80% European/Portuguese heritage.
Dragon kinda looks the same in manga too, but with tatoos and bald spots lmao.