Benn Beckman is the first mate of the Red-Hair Shanks Pirate Crew. A tall man, always seen with this rifle and a cigarette.
His first appearance was in One Piece Volume 1 CH. 1 "Romance Dawn".
The character of Ben Beckman has had various voice actors. Two for the Japanese version. The original voice actor for the character, Kazuyuki Sogabe, only did the character for Episode 4. The character was voiced in the future episodes by Aruno Tahara. The English VA for the FUNimation version is Sean Hennigan.
One Piece: Episode of Luffy - Adventure on Hand Island (OVA)
One Piece: Episode of Luffy - Adventure on Hand Island is an OVA special.