Triple Fighter (トリプルファイター Toripuru Faitā) is the fiercest warrior of Planet M, born when each fighter Green, Red, and Orange combined. Triple Fighter's form consists of the "superior intelligence" of Tetsuo (Green Fighter), the "tough body" of Yuji (Red Fighter), and the "innocent heart" of Lily (Orange Fighter).
The evil Devil Monsters from Planet Devil wiped out the population of Planet M except for three siblings who escaped to Earth. They were Tetsuo/Green Fighter, Yuji/Red Fighter and Lily/Orange Fighter. Triple Fighter is formed when the 3 siblings merge together.
- Miracle Signal: The large circular plate on his chest. It marks the limit of someone out of Three Fighters or if all three are too weak to fight, by changing to the Fighter's personal color, the remaining time is 1 minute before the Three Fighters are forced to return to themselves, this is Triple Fighter's only weakness.
The three fighters stand around in a circle and jump, shouting "Triple Fighter" together. They spin around in the air and merge into Triple Fighter.
- Triple Kick: His special move, majority of the Demon Phantoms were defeated by this technique.
- Triple-Double Kick: A variation of the Triple Kick where Triple Fighter kicks his opponent twice. First used in episode 19.
- Triple Neck: He grips the head of the enemy with his legs and flips them over onto the ground.
- Attack Fire: In planning stages, he was meant to be able to shoot 500,000 degree flames out of his body. This was not used in the show.
- While preparing a poster for Ultraman Zero The Movie: Super Deciding Fight! The Belial Galactic Empire, designer Masayuki Goto drew a refined version of Triple Fighter and a "blue" Jean-Nine to be included in the poster.
- Some of Triple Fighter's coloring was later inherited by Shining Ultraman Zero.
|Showa Heroes||Kamen Rider 1 | Mirrorman | Falcon | Redman | Red Fighter | Green Fighter | Orange Fighter | Triple Fighter | Jumborg Ace | Jumborg 9 | Fireman | Hanuman | Izenbo | Time Knight | Andro Melos | Andro Wolf | Andro Mars | Andro Flor|
|Heisei Heroes||Gridman/Servo | WoO | Mirrorman Reflex | Gridman Sigma | Don Shine|
|Ally Heroes||God Zenon | Dyna Dragon | Mountain Gulliver 5 | Rei | Mirror Knight | Glenfire | Jean-Bot | Jean-Nine | War God | Powered Zenon | Gridknight|