Signature weapon
A signature weapon (or trademark weapon or weapon of choice) is one commonly identified with a certain group or, in the case of literature, epic poems, comics, and film, where it is a popular trope, for both heroes and villains to be associated with and highly proficient in the use of specific weaponry. Examples include Robin Hood's longbow, Don Quixote's jousting lance, a wizard's wand, the Grim Reaper's scythe, Zeus' thunderbolt, Poseidon's trident, Thor's hammer, Arjuna's bow, the Monkey King's iron rod, a Jedi's lightsaber, William Tell's crossbow, David's sling, James Bond's Walther PPK and Gordon Freeman's crowbar.