Rivar leads the startup Cyedge in Gatepia, marked by long sea-green hair, piercing purple eyes, and a black outfit featuring a distinctive arms-length gauntlet on his left arm. His arrogance and hot temper frequently ignite explosive reactions to challenges or perceived slights. An unrequited rivalry with Akari of Kibou Company fuels his competitive drive, underpinned by heavily implied romantic feelings. This animosity intensifies during events like the young adventurers’ contest, where both companies clash for prize money. Despite his team’s early momentum, Rivar’s strategic errors culminate in failure when a rival secures the objective.

Though pretentious, Rivar proves a capable adventurer and combatant. He manages Cyedge with support from his secretary Valmi, yet his arrogance repeatedly plunges him into peril—evidenced by severe injuries sustained battling powerful majus guarding rare earth minerals. This incident later draws Kibou Company to Cyedge, where they extract tactical insights, underscoring a pragmatic layer to their rivalry. Rivar’s tactical acumen emerges during collaborations, like a temporary alliance with Kibou Company to defeat a three-headed maju boss by targeting weaknesses. His combat style relies on brute strength, and he strategizes with level-headed precision. However, emotional detachment and self-sufficiency often undermine teamwork and trust. Analytically focused and results-driven, he prioritizes objectives over relationships. His history as Akari’s forgotten classmate adds personal weight to their confrontations.