Allister is the ghost type Gym Leader of Galar. He only makes an appearance in Pokémon Shield. In Pokémon Sword, Bea the fighting type Gym Leader takes his place.

Even though Allister is quite young, he is shy and introverted. Because of his young age and love for ghost types he can be considered kind of sinister, especially with the mask he wears all the time. He is known to stutter and stall a bit on his words.

Quotes

"My very last Pokémon... How lonely... How frightening..." When Allister is down to his last Pokémon.

"I nearly lost my mask from the shock... That was...wow. I can see your skill for what it is." First time you beat him. (Gym battle)

"Maybe my mask...kept me from seeing just how strong you really are..." Second time you beat him. (Champion Cup)

"I'm glad I had my mask... I was making quite the face just now..." Third time you beat him. (Champion Cup rematch)

Allister's League Card

Allister's Rare League Card

Allister's Pokémon Teams

Gym Battle

Type(s): Ground and Ghost

Ability: Wandering Spirit

Held Item: None

Moveset: Brutal Swing, Hex, Disable

Type(s): Ghost and Fairy

Ability: Disguise

Held Item: None

Moveset: Shadow Sneak, Baby-Doll Eyes, Hone Claws, Slash

Type(s): Ghost

Ability: Weak Armor

Held Item: None

Moveset: Ancient Power, Curse, Hex

Type(s): Ghost and Poison

Ability: Cursed Body

Held Item: None

Moveset: Venoshock, Hex, Hypnosis, Payback

Champion Cup

Type(s): Ghost

Ability: Pressure

Held Item: None

Moveset: Shadow Punch, Thunder Punch, Rock Tomb, Disable

Type(s): Ghost and Fire

Ability: Flash Fire

Held Item: None

Moveset: Shadow Ball, Mystical Fire, Will-O-Wisp

Type(s): Ghost

Ability: Weak Armor

Held Item: None

Moveset: Hex, Strength Sap, Ancient Power, Amnesia

Type(s): Ghost

Ability: Weak Armor

Held Item: None

Moveset: Shadow Ball, Protect, Nasty Plot, Giga Drain

Type(s): Ghost and Poison

Ability: Cursed Body

Held Item: None

Moveset: Shadow Ball, Sludge Bomb, Dark Pulse, Hypnosis

Champion Cup rematch

Type(s): Ghost

Ability: Pressure

Held Item: None

Moveset: Shadow Punch, Fire Punch, Ice Punch, Disable

Type(s): Ghost and Fire

Ability: Flash Fire

Held Item: None

Moveset: Shadow Ball, Heat Wave, Will-O-Wisp, Energy Ball

Type(s): Ghost

Ability: Weak Armor

Held Item: None

Moveset: Hex, Strength Sap, Ancient Power, Amnesia

Type(s): Ghost and Ground

Ability: Wandering Spirit

Held Item: None

Moveset: Earthquake, Shadow Claw, Disable, Rock Tomb

Type(s): Ghost and Poison

Ability: Cursed Body

Held Item: None

Moveset: Shadow Ball, Sludge Bomb, Dark Pulse, Hypnosis

Fun Facts:

Allister is the youngest out of all the Gym Leaders in Galar

Allister's League Number, 291, can be read in Goroawase for 憎い in Japanese, meaning the word "hateful".