Ryuu Hoshikawa

"DynaBlack!"

Ryuu Hoshikawa (星川 竜, Hoshikawa Ryū) is DynaBlack (ダイナブラック, Dainaburakku) of the Dynamen.

Dynaman
A descendant of Iga ninjas, skilled in the art of ninpou and invisibility and never allowing himself to miss a day of training. Comedic and cheerful, children take a liking to him. A 22 year old astronomer, he dreams of contacting and befriending alien lifeforms.

Turboranger
Ryuu and his team joined up with the other nine Sentai to stand behind the newest Sentai, the Turborangers, as they faced off against the Hundred Boma Tribes.

Gaoranger vs. Super Sentai
DynaBlack is among the Sentai warriors seen in clips when Daimon Tatsumi (GoYellow) lectured Kai Samezu (GaoBlue) about the past Sentai technical warriors and their fighting spirit.

Legend War
Years later, Hoshikawa 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. Akarenger noticed the fleet moving towards them, he gathered all the Rangers together and gave them the order to sacrifice their powers to wipe out the first invasion's armada. The DynaBlack powers are later utilised by Don Dogoier via the Ranger Keys.

Farewell Space Pirates
After the Gokaigers defeated the second Zangyack invasion, Marvelous returned the Ranger keys to the Super Sentai, it is assumed Ryuu and his team have their powers back.

Super Hero Taisen
Ryuu, 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 was seen fighting a Gormin, a Zgomin, and Uni-Armadillo Yummy.

Dynaman Stage Show at 3 Heroes Korakuen Yuenchi
In a stage show where the Dynaman are seen fighting Tailed-People Clan Jashinka Empire, and Gavan arrive to assist the Dynaman.

Dynaman Stage Show at Super Hero Korakuen Yuenchi
In a stage show where the Dynaman are seen fighting Tailed People Clan Jashinka Empire, Goggle Red, Goggle Black, GogglePink, Ultraman Taro, Gavan,, VulPanther, and arrive to assist the Dynaman.

Mecha

 * Dyjupiter (shared with Red, Blue, Yellow, and Pink)
 * Dyna Mobile (shared with Blue)

Arsenal

 * Dyna Brace
 * Dyna Rod
 * Attack: Black Star Flash
 * Dyna Punch
 * Cross Cutter
 * Battle Tector

Attacks

 * Strong Shower
 * Meteor Kick
 * Black Art of Delivery
 * Hiding in Leaves of Wood
 * Hiding in the Smokes
 * 8 Step Kick
 * Ninja Arts Dance of Thick Fried Tofu
 * Attitude Change Arts
 * Black Spike (Original Version Unused)

Design
DynaBlack has a spandex suit, with a white main body seen in the legs with a red stripe along the sides, with the torso covered by a black "short-sleeved" shirt with a red stripe down the middle and along the cuffs, similar to the appearance of a baseball jersey. Both his gloves and boots are black in color; while a holster on the right side where he holds his DynaRod and a pin on his left torso with the Dynaman logo on it. His belt surrounds his waist with a buckle in the shape of the DynaBrace. His helmet is black, with a black visor that rises up in the middle appearing like glasses and a gray mouthpiece. The top of the helmet has a silver stripe rising up triangularly with a yellow logo inside: the top with a "II" symbol (the Roman Numeral "2") and the letters "DB" (which stands for "DynaBlack"). The logo and the visor are separated by a raised silver "lid" similar to a baseball cap.

Ranger Key
The DynaBlack Ranger Key (ダイナブラックレンジャーキー) is Ryuu Hoshikawa'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 DynaBlack Ranger Key was mainly used by Don Dogoier (Gokai Green), who used it to fight as DynaBlack.
 * When the Gokaigers became the Dynamen while fighting Deratsueigar of the Zangyack Imperial Guard.
 * When the Gokaigers became the Dynamen while fighting a Zangyack force led by Insarn and Barizorg.
 * When the Gokaigers became the Dynamen in order to use the New Super Dynamite attack against Action Commander Shieldon in a vain attempt to penetrate his shield.
 * As part of a bombardment of changes in the final battle with Emperor Ackdos Gill. He used his ninja duplicating attack alongside Luka (Yellow Mask).

The Dynaman 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. The Dynaman keys were defeated by Gokai Red.

After Zangyack were finally defeated, the Gokaigers gave the Ranger Keys back to their rightful owners. It is presumed that Ryuu received his key and became DynaBlack once more.

Portrayal
Ryuu Hoshikawa is portrayed by Jyunichi Haruta. As DynaBlack, his suit actors were Tsutomu Kitagawa (喜多川務), as well as Jyunichi Haruta himself.