The Thunder Break (サンダーブレーク Sandā Burēku) is a technique first used by Great Mazinger. It involves sending energy into the atmosphere that simulates the process of creating lighting. Once the resulting thunderstorm brews, the lightning is then channeled through the robot, usually through the finger although the technique can also be channeled through a bladed weapon. Since its debut, the move has become a semi-staple of the franchise, appearing in several variations.
- Great Mazinger: Thunder Break
- Grendizer: Space Thunder
- Minerva X Sirene Mode: Thunder Break
- Mazinkaiser SKL: Thor Hammer Breaker
- Great Mazinkaiser: God Thunder
- Grendizer Giga: God Thunder
- Mazin Emperor G: Thunder Bolt Breaker