Longarm Tribe

Longarm Tribe are a tribe of Humans in the One Piece world. They have not been explained deeply yet, but are mentioned in the list of slave prices Duval gives Sanji.

Appearance
Scratchmen Apoo is a member of this tribe and according to his appearance, the reason why they are called this is because their arms are lengthened by the fact that they are double elbowed.

All members seen so far wear Chinese style clothing.

Inter-species Relationships
Apparently they are the ones responsible for destroying the country of Harahetternia of Namakura Island. The cultists of Namakura Island were in the middle of a summoning of Satan, wanting him to help destroy the Longarm Tribe. However, due to Kuma, Brook landed right in the middle of the summoning. Believing him to be Satan, the people of Namakura Island want him to help them get revenge on the Longarm Tribe.

Trivia

 * The Japanese name of the Tribe, Tenaga, and the tribe people appear to be based on Japanese mythological monster called a Tenaga whose most notable characteristics were long arms.