Ryusei Tsurugi

"I am Metalder!"
―Metalder introducing himself[src]

"Wind, Clouds, Sun! I ask you from the bottom of my heart- why was I born in the world like this?!"
―Metalder after his first fight with Neros[src]
**Metalder** (メタルダー, *Metarudā*?) is a "Choujinki", a powerful war android built by Dr. Koga at the end of World War II originally as a countermeasure against the Americans.

He was hidden in a secret base of the Japanese Imperial Army until Dr. Koga activated him years later to fight the Neros Empire. His human guise, **Ryusei Tsurugi** (剣 流星, *Tsurugi Ryūsei*?), is directly modeled after that of Dr. Koga's son Tatsuo of whom he lost during the war.

Whenever his energies reach a peak from rage, with the cry **Ikaru!** (怒る!, *Anger!*?), he transforms into his metallic form. Like Tatsuo, he loves music and plays the saxophone from time to time. His Reflection Circuit gave him the same feelings as humans and a sense of right and wrong. Powered by 'super-gravitational energy', his killing techniques include "Laser Arm", "G-Kick", "Metal Tornado" spinning kick, "Head Crash" ram, "Plasma Punch", "Metal Bomber" punching attack from above, And "1000 Hand Punch".

## Biography

Metalder was created by Ryuichiro Koga during the World War II. Now after he found out that the Neros Empire was behind the catastrophes he awakened Metalder to defeat the Neros Empire. He was given the name Ryusei Tsurugi. In his first battle he was very weak as he didn't know the extend of his powers and was defeated easily by the villains. Hurry! To the Hundred-Demon Spirit World

He met a girl named Mai Ogi and became his first human friend. I Have Become God Neros He later met Hakko Kita, a Grand Prix motorcyclist who became his partner in his battles against Neros. Love's Rival is a Cruching Biker Family

At the end of the series he defeats God Neros but in the process, his super-gravitational energy is greatly damaged, as a result whenever he moves longer, he will explode and the world will be destroyed by its impact. With Kita's help, Metalder is spared from destruction, but at the cost of his human form and his ability to fight as a Choujinki. Great Decisive Battle! Metalder for Eternity

## Appearances in other media

### Maskman Stage Show at 3 Heroes Korakuen Yuenchi

In a stage show where the Maskman are seen fighting usual foes, Armored Army and Gorgom show up and wind up defeating them. Metalder and Kamen Rider Black arrive and assist the Maskman.

### Maskman Stage Show at Super Hero Korakuen Yuenchi

In a stage show where the Maskman are seen fighting Underground Empire Tribe, Kamen Rider Black, Metalder, Spielban, Shaider, Red Flash, Blue Flash, Change Dragon, Change Phoenix, Green Two, and Dyna Black arrive and assist the Maskman.

### Liveman Stage Show at Super Hero Korakuen Yuenchi

In a stage show where the Liveman are seen fighting their usual foes, Great Star League Gozma, Reconstructive Experiment Empire Mess, Underground Empire Tube, Armored Army, and The Sorcerers Clan show up and wind up defeating them, Kamen Rider Black, Kamen Rider Black RX, Jiraiya, Princess Ninja Emiha, Red Mask, Pink Mask, Metalder, Red Flash, Yellow Flash and Change Dragon arrive and assist the Liveman.

## Metalder

**Arsenal**

* Silver Carcass

**Attacks**

* Laser Arm
* G-Kick
* Metal Tornado spinning kick
* Head Crash
* Plasma Punch
* Metal Bomber
* 1000 Hand Punch

**Vehicles**

* Side Phantom
* Metal Charger

## Behind the scenes

### Portrayal

Ryusei Tsurugi is portrayed by Seiko Seno (妹尾 青洸, *Senō Seikō*?) (credited as Akira Senō (妹尾 洸, *Senō Akira*?)), who also portrayed Tatsuo Koga. As Metalder, his suit actors were Kazuyoshi Yamada (山田 一善, *Yamada Kazuyoshi*?) and Noriaki Kaneda (金田 憲明, *Kaneda Noriaki*?).

## Notes

* Metalder resembles the protagonist of Shotaro Ishinomori's Kikaider.