Randengyoku emerges as a significant antagonist during the climax of the second season. He leads the Silverback Thieves, also known as the Silver Spine Bandits, and holds VIP status within the elite Precious organization. His vast in-game assets approach the billion-currency threshold, placing him near the coveted rank of Billion Player.

In the season finale, Randengyoku directly blocks the protagonist's advance toward the Totems' base. He displays formidable combat prowess, firing potent gold-colored energy blasts over great distances and engaging multiple foes at once. His rapid-fire fighting style overwhelms opponents, deliberately preventing them from activating special abilities.

During battle, Randengyoku transforms into a giant form, wielding a massive chain gun capable of immense destruction. The ammunition from this weapon carries an unexploded ordnance capability, though this function remains inactive during the observed conflict.

His actions inflict heavy player casualties. The fight against him requires coordinated efforts from the protagonist, members of the Totem organization, and the assassin Purple. Despite facing numerous adversaries, Randengyoku remains effective in combat until negotiations shift his focus toward challenging Temujin, the leader of the Totems, instead of continuing the immediate battle.

Visually, Randengyoku possesses blonde hair and exhibits a chaotic, aggressive demeanor in combat. His design emphasizes this unpredictable nature.