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In the SPECIAL character system, traits are optional character modifications that affect the player character. Traits appear in Fallout, Fallout 2, Fallout Tactics, and Fallout: New Vegas.


Traits modify different aspects of gameplay, such as primary statistics, derived statistics and skills. Traits have positive and negative results, unlike perks in earlier Fallout games. In games where traits exist, one can choose up to two traits when designing a character (or none at all). Choosing the Mutate! perk lets the player change one of their traits. Note that if you chose no trait at character creation, you cannot fill the empty slot with this perk.


In Fallout Tactics, where characters of different races can be created, traits also have different racial requirements.

List of traits

General traits

Trait Fallout Fallout 2 Fallout Tactics Fallout: New Vegas
Bloody Mess Yes Yes Yes No
Bruiser Yes Yes Yes No
Built to Destroy No No No Yes
Chem Reliant Yes Yes Yes No
Chem Resistant / Clean Living Yes Yes Yes No
Fast / Increased Metabolism Yes Yes Yes No
Fast Shot Yes Yes Yes Yes
Finesse Yes Yes Yes No
Four Eyes No No No Yes
Gifted Yes Yes Yes No
Good Natured Yes Yes Yes Yes
Heavy Handed Yes Yes Yes Yes
Jinxed Yes Yes Yes No
Kamikaze Yes Yes Yes Yes
Loose Cannon No No No Yes
Night Person Yes No Yes No
One Hander Yes Yes Yes No
Sex Appeal No Yes No No
Skilled Yes Yes Yes No
Small Frame Yes Yes Yes Yes
Trigger Discipline No No No Yes
Wild Wasteland No No No Yes

Old World Blues traits

Traits added by the Fallout: New Vegas add-on Old World Blues.


Some traits, such as Bloody Mess and Finesse, were converted into perks for Fallout 3.