Eisuke Yamauchi

Eisuke Yamauchi (山内永輔 Yamauchi Eisuke) is one of the four Nexus Admins in Five, as well as one of the heads of the police department, commanding multiple enforcer groups in their town, as well as inside Nexus.

His epithet is "Avalanche" because of how quickly and overwhelmingly he and his group can wipe out a dangerous situation, as he first shows in the "Rise and Fall" arc.

Deck
Eisuke runs a mafia-themed Vigore Famiglia Deck, whose family flag is the vigorous horse.

His Deck is a monster mash Deck focused on gathering as many members of his Famiglia as possible - a battle group in the front row (Monster Zones) and a supporting group in the back row (Spell/Trap Card Zone). With his Famiglia all gathered under the command of the boss (placed in the Field Zone), Eisuke creates an impregnable, nearly perfect formation with his monsters.

As one of Nexus' Admins, Eisuke's cards are made of the same technology as Nexus - hiding a special potential within them - and he possesses a Pillar Deity Card.

''[Note: When the boss is activated as a Field Spell, a huge throne surges from the ground, several flags and carpets of the famiglia are placed on the field, and cameo famiglia members swarm around the boss at his command. The backrow monsters could be shown as regular monsters, only one row behind, similar to how the Seal of Orichalcos worked in the anime.]''