|This article is about a/an ranger in Himitsu Sentai Gorenger.|
- ―Midorenger's roll call[src]
Kenji Asuka (明日香 健二 Asuka Kenji) is Midorenger (ミドレンジャー Mido Renjā, Green Ranger) of the Gorengers with the designation number "5". He is the youngest member of the team who was training at EAGLE's Kansai branch.
When the Black Cross Army launched an assault on the EAGLE bases in Japan, a force led by Poison Gas Mask attacked the Kansai base, slaughtering everyone with only Asuka surviving. Along with the survivors of the other bases, Asuka was summoned to Snack Gon, the secret gateway to EAGLE Japan's main command center by Japan's EAGLE Commander Edogawa Gonpachi. There they were given special formfitting electronic battlesuits, which empower its wearer with various superhuman abilities. Edogawa told them that they are the Secret Squadron "Gorenger", the world's best chance against the forces of the Black Cross Army. Their first battle was with Gold Mask, who they destroyed with the Gorenger Storm.
J.A.K.Q. vs Gorenger
to be added
Gaoranger vs. Super Sentai
Gaoranger vs. Gorenger
to be added
Years later, Kenji fought alongside not only his own team, but every single Sentai ranger in existence, against the Empire of Zangyack when it attacked the Earth in the Great Legend War. After fighting against hundreds of Gormin and their Zgormin commanders, his team's leader, Kaijo, noticed the fleet moving towards them. He then gathered all the Rangers together and gave them the order to sacrifice their powers to wipe out the first invasion's armada. The Midorenger powers are later utilized by Don Dogoier via the Ranger Keys.
Farewell Space Pirates
After the Zangyack's final defeat, Marvelous returned the Ranger Keys to their original owners. His team leader, Tsuyoshi Kaijo was seen seeing the Gokaigers off. It is assumed that Kenji and his teammates have their powers once more.
Super Hero Taisen
Kenji, alongside his team, among the majority of the Super Sentai heroes, was caught up in the "Super Hero Taisen" incident which eventually resulted in the Super Sentai teams and Kamen Riders joining forces to defeat both Dai-Zangyack and Dai-Shocker. During the final battle, he is seen with Kamen Rider Black fighting a Shokcer Combatman and a Gormin.
Video Game appearances
Super Tokusatsu Taisen 2001
Super Sentai Battle: Ranger Cross
Midorenger appears with his team in Super Sentai Battle: Ranger Cross.
- Kenji Asuka/Midorenger: Gorenger's youngest warrior. He has had failures due to overreacting in his behavior, but it matures him into being an adult warrior day by day. He defeats opponents with fast attacks that utilize lightness in battle.
Super Sentai Battle Base
Midorenger is among the vast pantheon of Rangers which are available in the mobile game Super Sentai Battle Base.
He is a happy-go-lucky teen, who can sometimes be a bit brash and temperamental.
As Midorenger, he was armed with a number of unique weapons. His signature weapon was the razor-sharp “Midomerang” (Green-boomerang) which can be flung at enemies. He could also use it as a handheld weapon to cut and slash his opponents.
His “Midomerang” was later upgraded to the “New Midomerang” which was a bit bigger. He also carried the “Mido Puncher” which was an updated slingshot weapon which can be used to fire “pachinko-ball” pellets and sometimes explosives. Asuka drove the super motorcycle “Green Machine” and later the “Green Star.”
- Double Kick - A double attack able to take out two Zolders.
Midorenger wears a green spandex-like suit with five red "V" shapes across his chest. He wears black boots and gloves. His uniform also sports a pinup collar, a green cape, and a black belt with the team's "5" symbol as a belt buckle. His helmet is green with a black, boomerang-shaped visor and a silver "5" on the forehead.
The Midorenger Ranger Key (ミドレンジャーレンジャーキー Mido Renjā Renjā Kī) is Kenji Asuka's personal Ranger Key and what became of his powers after he along with the rest of the 34 Super Sentai sacrificed their powers to end the Great Legend War.
This key, along with the majority of the Ranger Keys were collected by the Red Pirates and later used by the Gokaigers. The Midorenger Ranger Key was mainly used by Don Dogoier (Gokai Green), who used it to fight as Midorenger.
- The Gokaigers became the Gorengers in their first ever Gokai Change on Earth.
- Among several changes as he, Marvelous, Luka, and Ahim fought against Zangyack while Joe was absent.
- The Gokaigers became the Gorengers in their baseball match with resurrected Black Cross Army monster Baseball Mask.
- As part of an all-green change to defeat a duo of Dogormin, Don did a combo attack with Luka (ShishiRanger), as both Midorenger and ShishiRanger had weapons which are thrown at the enemy.
The Gorenger keys, along with all the Ranger Keys of the first 33 Super Sentai, were briefly taken by the Black Cross King and turned into Ranger puppets that were fought by the Gokaigers and the Goseigers. At the start of the battle, the Gorengers had a brief skirmish with the two teams alongside the keys of three recent teams, the Gekirangers, Go-Ongers, and Shinkengers. The Gorengers appeared again after all the other puppets were defeated, with a Gorenger Hurricane ball being kicked at Gokai Red and Super Gosei Red. The Gorengers stood behind the three recent teams who fired their cannons at the Gokaigers and Goseigers, who countered with their team finishers, taking down the three teams as Gokai Red and Super Gosei Red finished off the fake Gorengers.
After Zangyack were finally defeated, the Gokaigers gave the Ranger Keys back to their rightful owners. Kenji received his key and became Midorenger once more.
Behind the scenes
Kenji Asuka was portrayed by Yukio Itō (伊藤幸雄), who would later play Kensaku Shiraishi/Battle Cossack I in Battle Fever J. As MidoRenger, he had several suit actors: Bunya Nakamura, Yasuo Yukawa, Haruhiko Yashimoto (episodes 1-60), Jun Murakami (episodes 61-84).
Midorenger has one leitmotif, entitled "Nazonazo no Midorenger".
- Strangely, Midorenger is seen in a Black Megaforce Ranger card in previews for the Power Rangers Action Card Game Series 3, Universe of Hope.  His appearance is unexplained.
- Tommy Oliver - The first green Power Ranger.
- Adam Park - The first main-team Green Ranger
- Damon Henderson - The first Power Ranger to be Green for an entire series (Tommy, Adam and Carlos Vallerte alternated between multiple colors)
- Zack Taylor - The first Power Ranger to take his position on the core team.