Eusine, a dedicated researcher and self-proclaimed authority on Legendary beasts, channels a lifelong fixation on Suicune, sparked by childhood tales from his grandfather. These stories wove Suicune’s role in Johto’s folklore—the Burned Tower’s ruin and the Legendary trio’s revival by Ho-Oh—into an obsession that drives his actions across multiple adaptations. His persona oscillates between methodical scholar and impassioned zealot, depending on the medium. In *Pokémon Crystal*, Eusine collaborates with Morty, Ecruteak City’s Gym Leader, to investigate the Burned Tower. Later, he challenges the player in Cianwood City, convinced victory might sway Suicune’s favor. Once Suicune is captured at the Tin Tower, he relocates to Celadon City, tracking the player’s journey before aiding Ho-Oh’s summoning. *HeartGold* and *SoulSilver* extend his arc as he trails Suicune through Kanto, ultimately yielding a pivotal encounter at Cerulean Cape to the player, acknowledging their prowess. The anime amplifies his volatility. In *Pokémon Generations*’ *The Reawakening*, he contemplates coexistence between humans and Legendary Pokémon, contrasting sharply with earlier portrayals. *For Ho-Oh the Bells Toll!* frames him as brash and combative, confronting Ash over his encounters with Suicune and Ho-Oh. His recklessness peaks when deploying Alakazam to seize Suicune, only to be repelled by its Roar. *The Legend of Thunder!* tempers his arrogance with tactical skill, aiding Jimmy and Marina against Team Rocket while retaining his trademark confidence. The *Pokémon Adventures* manga casts him as Crystal’s rival in pursuing Suicune. After thwarting Team Rocket’s Elite Trio together, he secures the Clear Bell to access the Bell Tower, yet Suicune selects Crystal as its ally. Undeterred, he pledges to prove himself worthy. *Pokémon Masters EX* diverges by granting him a Shiny Suicune—a rare triumph amid narratives where his quest often lingers unresolved. His dynamic with Morty remains a blend of alliance and tension, strained by his singular focus. Across all iterations, his attire—a purple cape, suit, and red bow tie—mirrors Suicune’s elegance, embodying their entwined fates.