| ||For the settlement that appears in Fallout 2, see Gecko (town).|
| ||This is an overview article which contains background information and cross-game comparisons. For game-specific information and stats, see the articles linked on the right.|
Geckos are mutated and enlarged creatures prized for their sleek and durable hides. Before the Great War, they could be found in warm climates throughout the world, ranging from 0.39 in (1.6 cm) to 27 in (60 cm) in size, with the particularity among other lizards to make chirping sounds in social interactions with other. After the Great War, they've mutated, causing them to grow to giant size. Most of them evolved due to their exposure to the mutated F.E.V. in the air coming from the West Tek Research Facility, while some emerged due to other toxic conditions like massive radiation spills.
Geckos are reptilian in appearance and sport a pair of frills behind their head. Their eyes generally have an orange tint, and their body colors differ greatly based on the individual gecko type. All geckos have five fingers, five toes and have kept their pre-War ability to make chirping sounds in social interactions with each other. Gruff breathing, squeaking and cooing can be heard from time to time in gecko-inhabited areas. Like their pre-War cousins, Geckos lack eyelids and tear-ducts and can often be seen using their elongated tongues to lick at their eyes, clearing away dust and small debris. Most regular geckos are peaceful, unthreatening creatures, but if one gecko is attacked, the rest of the pack in the area will quickly converge on the attacker, charging quickly with their mouths open and rapidly attacking with bites and swipes from their clawed hands.
Geckos seem to have no strictly hierarchical social structure, with no apparent leader and everyone seemingly being equal in the pack. Some seem to serve as hunters for the pack. Like deathclaws, they are oviparous, with the eggs typically covered by the father or the mother before the hatching and not laid into a place.
Normal geckos and golden geckos have hides that can be turned into all sorts of useful and attractive clothing items. Dresses, jackets and even armor can be constructed from their durable pelts after they've been tanned.
The regular gecko is a small-medium sized gecko with indigo skin. Like their cousins the silver geckos, they are mostly peaceful but tend to be rather aggressive in groups. They are very quick on their feet and are fond of using their numbers to rush and overwhelm the opponent.
Silver / little geckoEdit
The silver gecko, also called little gecko, is a small sized gecko with silver skin. They are the smallest and least aggressive of all geckos and are not very resistant to damage. They have thus far only been observed in southern Oregon.
The golden gecko is a medium-sized gecko with a rich, golden hide. They are a rarer, but also deadlier breed than the regular or silver gecko. They can be found around irradiated areas in which they lick up toxic waste, causing their particular mutation, making their hides far more "glamorous" than any other kind of gecko, and making their attacks irradiate the opponent. They can be found in southern Oregon and in the Mojave Wasteland.
The fire gecko is a medium-large sized gecko with dark violet skin. They are the second deadliest kind of gecko after the green gecko and, as indicated by their name, can breathe fire due to their constant exposure to sulfur that is now held in their digestive system. Unlike other geckos, they also have large spikes or decorative frills that cover their heads down to their lower back. They are immune to fire and their hides are far too mangy or burned to have any true value. They can be found in northern California and in the Mojave Wasteland.
The green gecko is a large gecko with shiny light green skin. They are the most deadly of all geckos, and can spit several slow-moving and far-reaching globs of poisonous saliva similar to centaurs. Despite their fragile appearance, they have a high resistance to damage. The cause of their mutation is currently unknown, though some theorize it might be due to ingestion of poisonous plants native to Zion. They can only be found in Zion Canyon.
Called simply gecko when spawned, Gojira is its editor ID. Its model is identical to that of 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 0011324a) which has a base damage of 400 and an incredible damage per second of 3,200, and a staggering 8,000 HP. It can kill anything if one is placed beside it. Not even a 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.
- In Fallout 2, the quest perk Gecko Skinning allows the player character to skin silver gecko and golden gecko (not fire gecko). In Fallout: New Vegas, one is able to take the hide of any kind of geckos directly, and if their survival skill is high enough, they can tan the skin at a campfire.
- In Fallout: New Vegas, geckos are considered animals for purposes of the Animal Friend (with the exception of the fire gecko), Animal Control and Hunter perks.
- Green geckos were first planned to appear in Fallout d20 before finally appearing in the Fallout: New Vegas add-on Honest Hearts.