The Underground Dueling Arena (地下にあるデュエル場 Chika ni Aru Dyueru Ba) houses illegal gambling Duels in the Yu-Gi-Oh! ARC-V anime. The arena is promoted by Lucas Swank, who is on the lookout for strong Duelists looking to compete against others. Within this arena, one may be able to participate in the Friendship Cup by defeating 10 people in a row.