Eugene emerges as a dedicated Legendary Pokémon scholar with a focused passion for Raikou’s welfare. When Raikou sustains injuries during a clash with Team Rocket operatives Attila and Hun, he arrives swiftly at the Pokémon Center to evaluate its recovery, acutely aware of the creature’s deep-seated wariness toward humans—a distrust he attributes to generations of exploitation. Advocating for Raikou’s immediate release into the wild, he prioritizes the Pokémon’s autonomy over prolonged human contact.

After Raikou flees the facility, Eugene swiftly mobilizes trainers Jimmy and Marina, employing his specialized vehicle to trail the Legendary Pokémon across rugged terrain. His urgency stems from both protective instincts and a drive to document Raikou’s behavior. During a tense showdown with Team Rocket, he reveals tactical acumen, deploying his Alakazam to erect protective barriers as the group works to dismantle a crackling energy net ensnaring Raikou.

Collaboration defines his strategy: he integrates Jimmy and Marina’s Pokémon into countermeasures against Team Rocket’s technology, balancing caution with decisive action. When Raikou becomes trapped within a self-destructing Miracle Crystal, Eugene sanctions high-stakes measures to breach the prison, underscoring his commitment to the Pokémon’s survival over risk-averse protocols. His efforts culminate in Raikou’s escape, the departing Legendary Pokémon pausing briefly as if acknowledging the group’s resolve before vanishing into the wilderness.