Allister is the Gym Leader of the Galar region's Spikemuth Gym. Known for his affinity for Ghost-type Pokémon, he often dons a mask that adds to his enigmatic charm. Despite his shyness and timid demeanor, Allister possesses a sharp mind and keen battle instincts, making him a formidable opponent in battles. He enjoys the thrill of competition, particularly during special events like Halloween, where his ghostly Pokémon shine. Wrapped in a cozy oversized sweater, he prefers to observe from the sidelines, communicating his thoughts through his Pokémon rather than words. Allister's bond with his Pokémon reflects his caring nature, as he treats them as friends and allies. Although he appears quiet, those who get to know him discover a deep passion for the world of Pokémon and an unwavering dedication to becoming a top trainer.