The Deadly Viper Assassination Squad (or DVAS) are fictional characters in Quentin Tarantino's Kill Bill.
Bill and Budd are brothers who grew up without a father (although Esteban Vihaio, a pimp, acted as a father-figure for a time). O-Ren Ishii was left an orphan after her parents were killed by Japanese crime boss Matsumoto and his then hit-man, Bill.
They were, as their name suggests, an assassin squad, run and managed by Bill. He is known to have had romances with Kiddo (his girlfriend and protégée, whom he impregnates) and Elle Driver.
Although their name suggests that the members of the team are codenamed with vipers' names, the black mamba and the California mountain snake do not belong to the viper family; the black mamba is an elapid and the California mountain snake belongs to the colubrids.
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