Crimson Viper charges her glove in preparation for Burst Time.
Burst is C. Viper's Ultra Combo in Street Fighter IV, and her Ultra I in Super Street Fighter IV.
Description of Burst Time
Crimson Viper charges her glove, before pounding the ground causing an electric explosion that knocks her opponent into the air. As they begin to fall to the ground, she uses her boots to spin in the air, delivering a series of four fire kicks to the opponent. Burst Time, like most ultras, is very damaging. It is well known for it's many combo oppurtunities (e.g. seismo hammer to flame kick juggle, or fierce lightning knuckle air juggle) but also has very strict timing. Burst Time must be blocked low, and is preformed by doing a quarter-circle forward motion twice, and pressing all three punch buttons.
Video of Burst Time
thumb|500px|left|C. Viper using Burst Time.