Gojira

Gojira is an unused creature found in the Fallout: New Vegas game files. It can only be accessed by console commands.

About
Called simply gecko when summoned, Gojira is its editor ID. It is graphically identical to the fire gecko, but triple the size, making it roughly equal to a super mutant behemoth in height. It has its own unique embedded fire breath weapon called 'Gojira Flame' (baseid 0011324c) which has a base damage of 400 and an incredible damage per second of 3200, and a staggering 8,000 HP. It will kill any creature if one is placed beside it. Not even the X-42 giant robo-scorpion, legendary deathclaw, or legendary bloatfly (the strongest creatures in the game) stand a chance against Gojira, making it the strongest creature in the game.

Appearances
Gojira is only found in the game files for Fallout: New Vegas.

Behind the scenes
Gojira is the name of the Japanese movie monster better known to English speakers as Godzilla.