So it is a sword. It just happens to function like a key in very specific situations. Or it's a key all the time, and when you stick it in people, it unlocks their death.
— Church and Caboose discussing the Great Key


The Great Key was meant to unlock the ultimate weapon that would lead to a whole civilization's greatest strength- sadly, that was before Lavernius Tucker found it and swiped it away before the designated alien hero could get to it. Nowadays it acts as a sword and time-to-time VIP pass to some ultimate alien weaponry.

Powers and Stats

Tier: At least 9-A, likely higher

Name: The Great Key, The Great Weapon, Lightsaber (only by Caboose), Energy Sword

Origin: Red vs Blue

Classification: Alien Temple Key

Prerequisites: The holder must be the original founder of the key and have some spirit of the warrior- otherwise it will not work.

Attack Potency: At least Small Building level, likely higher (cut through a huge steel box the size of two-three trailers and filled with equipment with relative ease, Impaled The Meta through the chest)

Wielders: Lavernius Tucker, Doyle, Felix, Locus

Range: Extended melee range

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