This Clawitzer is a Water-type Pokémon owned by Sawyer.
Once Doublade was defeated, Sawyer sent Clawitzer in battle against Ash's Noivern. Clawitzer started with Crabhammer, but was blown away by Noivern's Boomburst. However, Clawitzer healed itself with Heal Pulse and, due to Mega Launcher ability, Clawitzer managed to heal itself even further. Afterwards, Clawitzer launched Dragon Pulse, negating Noivern's Dragon Claw and defeating it. Ash sent Hawlucha in the battle, hitting Clawitzer with High Jump Kick before evading its Dragon Pulse attack. Hawlucha proceeded to use Flying Press to disable its pincers, but Clawitzer was blown into air when it used Dragon Pulse on the ground. Hawlucha repeated its attack, but was defeated by Clawitzer's Ice Beam. As his final Pokémon, Ash sent Greninja, who dodged Clawitzer's Dragon Pulse and countered its Ice Beam with Cut and managed to defeat it.
Clawitzer was used in the Semi-finals of the Lumiose Conference against Ash. It followed Talonflame around with Aqua Jet and hit its right wing with Ice Beam. While Talonflame melted the ice with Flame Charge, Clawitzer used Aqua Jet and crashed into Talonflame, defeating it. Pikachu was sent out, who jumped from tree to tree in the forest battlefield, then used Thunderbolt and Quick Attack. Clawitzer evaded both attacks and fired Ice Beam, but missed. Clawitzer fired Dragon Pulse, which collided with Pikachu's Electro Ball. Pikachu used Iron Tail, which Clawitzer stopped by grabbing his tail. Clawitzer tried to attack by using Water Pulse, but was quickly stopped by Pikachu's Electro Ball. After Pikachu got out of Clawitzer's grip, he used Thunderbolt to defeat it.
Ash remembered his battle in the Kalos league against Sawyer and his Clawitzer, Aegislash, Salamence and Sceptile when he was reflecting back on his journey.