Arka

Arka is a player of the game Greed Island.

Greed Island arc
He appears right after Gon and Killua obtain their first specified slot card. After Motarike fails to steal Gon and Killua's Sword of Truth card, Arka steps in, using two Pickpocket cards to randomly steal the cards that the two boys have gathered. However, because they have taken precautionary actions to protect the cards, Arka ends up getting a rather common stone that can be found everywhere. Running out of tricks and realizing that the boys are very smart, he gives up on trying to steal their cards.