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|Galliard and Pieck should be able to do it. They'd be able to wipe out the enemies in the pillbox and the trench in the blink of an eye.|
|— Colt acknowledges the speed of Jaws and Cartman|
Galliard's Titan appears to have armored skin on the fingers as well as a cog-like mouth of thick flesh which possesses immense strength, providing a namesake for his Titan. Furthermore, Galliard's Jaws has been noted as being among the faster Titan forms, alongside Pieck's Cartman.
The Jaws, like all the Nine Titans, was brought into the world after the death of Ymir Fritz. In the 1,700 years following her death, the Jaws was held in the possession of one of the eight warring Eldian houses subservient to the Founding Titan. After these seventeen centuries when the 145th King of the Fritz family abandoned the conflicts of Eldia and relocated to Paradis, the Jaws was taken by the nation of Marley during the Great Titan War.
At the climax of the Marley Mid-East War during the battle of Fort Slava, Galliard is present in the trenches dug by the Marley warrior unit surrounding the fort. Cadet Colt suggests making use of Galliard's Jaws and Pieck's Cartman against the defenses of the Mid-East Allied Forces, but Commander Magath rejects the proposal due to the presence of anti-Titan artillery patrolling the perimeter of the fortress. However, once cadet Gabi destroys the armored train carrying the artillery using explosives, Galliard is sent out onto the battlefield. His Titan proves to be more than enough to defend against the turret-fire from the bunkers surrounding Fort Slava, and Galliard's Titan makes quick work of Marley's enemies.
Galliard's attack on the Mid-East defenses is met with support from the 800-warrior unit and Pieck's Cartman in full battle armor. Using the immense strength of his Titan's jaws, Galliard rips the railways from the ground, ensuring a complete immobilization of the Allies' defenses. Shortly afterwards, Galliard retreats as Zeke Yeager begins a Titan airstrike directly above the fortress, dropping dozens of mindless Titans onto the Allies. When Reiner Braun joins the fight as the Armored Titan, Galliard assists him in destroying the remaining anti-Titan artillery stationed within the ruined fortress.