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.

On his character

 * Eisuke has a strong presence, almost reminiscent of a mafia boss. He can't go unnoticed. He speaks loudly and assetively, and doesn't hold back. Because of that, he can sound ruder than he meant to, but when he does, he quickly realizes it and clarifies his intention.
 * Sample intense Eisuke lines:
 * Calls support for a Scotch tape he bought and hated: "Dude, this tape doesn't stick to the surface at all, but it sticks like heck to my fingers! What the hell? Seriously, the only way you could make a tape worse than this would be if you made one that catches on fire spontaneously! Actually, I thought again, if you have a tape that catches on fire spontaneously, send me one of those, 'cause it's still better than this crap I bought!"
 * To lazy employee: "Ok, let's say I kill you; your mum would be pretty sad, wouldn't she? Wouldn't she cry a lot? Do you wanna make your mum cry? You don't, right? So get the hell going, dammit!"
 * Nishio and Fukuda are always with him, being two of his most trusted subordinates (the third being Togo, who prefers to be alone). While together, their dynamic often consists of Eisuke just being himself, a cool Nishio scolding him for being too loud or rude, Eisuke not giving a damn, and an enthusiastic Fukuda praising the boss for his attitude.

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.]''