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Galen (Japanese: ギジュ Guijeau) is Captain Phantom's second-in-command in Pokémon Ranger and the Temple of the Sea.
He was ordered by Phantom to attack the group when returning from the stream, in which his Beedrill used multiple Sludge Bomb and Pin Missile attacks, but Pikachu countered with a Thunderbolt, allowing them to escape.
He was later commanded again to attack, this time with the ship's Supersonic, which put all the surrounding Pokémon in a confused state. Later, after Kyogre destroyed the ship, Galen goes unseen until the closing credits.
During the credits, it's revealed he's sharing the same jail cell as his Captain.
In the manga
Galen appears in the manga series of the ninth movie where he plays the same role.