V-Trigger

The V-Trigger (Ｖトリガー) is a mechanic introduced in Street Fighter V.

Description
Executed by pressing both heavy buttons, the V-Trigger varies depending on the character: some fighters gain access to a power-up for a limited amount of time, while others perform a single move that can turn the tide of battle. When activated, wisps of energy will flow around the character to signify that they have entered V-Trigger mode. Using a character's V-Trigger will deplete the V-Gauge.

In Street Fighter V: Arcade Edition all playable fighters gain a second V-Trigger. Their original ones are refered in-game as "V-Trigger I" while the second ones are "V-Trigger II".

Trivia

 * Professional wrestler and Street Fighter fan Kenny Omega adapted the mechanic's name for his signature running knee strike, he is also known for utilizing the Hadouken and Spinning Piledriver in his moveset.