Bojack charges up ki and releases it in a powerful burst that protects him from his opponent's attacks. Bojack uses this technique after he slams Vegeta into a building. He starts to transform, then he uses the Power Guard to destroy the building Vegeta is smashed against, knocking his opponent away.
Appearances in games
Power Guard was named in Dragon Ball: Raging Blast 2, where it appears as Bojack's signature attack in both of his forms. In the game, this technique stops Guard Crushes.