Daisuke Yoruko

{| style = "width:50%;" "Heir to the White Sea Kingdom! Gotei Diamond!"

- Gotei Diamond's roll call

Daisuke Yoruko is the son of the wealthy Yoruko family who becomes Gotei Diamond (ゴテイダイヤモンド Gotei Daiyamondo), the White Ranger of the Goteigers. He is the current generation of the royal family of the White Sea Kingdom, one of the five lost kingdoms of Gorenia.

Personality
As would be expected from someone from the Yoruko family, Daisuke carries himself with elegance and class. Knowing better than to disrespect those lower than him, he will give praise where praise is due and will even hang out with people from lower classes, as evidenced by his friendship with Jimmu. This respect does not seem to extend to those with less-than-noble intentions, however, resulting in less respect toward Shigsuzu. While not a pacifist, Daisuke is not well-accustomed to getting his hands dirty, thus making him initially the most inexperienced Goteiger in combat, though he manages to learn.

Powers and Abilities

 * Gorenia Royal Blood
 * As a descendant of a Gorenia Royal Family, he is granted certain perks.
 * Telepathic Communication
 * He is able to mentally communicate with the revived servants of the White Sea Kingdom.
 * Artifact Registry
 * Any artifacts from the White Sea Kingdom will only react to him due to him being of the royal bloodline.
 * Arsenal Call
 * He can call any of his Goteiger gear and armaments to him with a simple declaration, even while unmorphed.

Gotei Ruby
"*Royal trumpets* Heika! Diamond!"

- Transformation announcement

Arsenal
 * Transformation Bracelet Gotei Changer
 * Diamond Goteiger Crystal
 * Diamond Monshorobo Crystal
 * Diamond Laser
 * Crystal Sword
 * Prism Gun

Mecha
 * Monshorobo Diamaid

Ranger Key
"Goteiger!"

- Mobilates' Gokai Change announcement

The Gotei Diamond Ranger Key (ゴテイルビーレンジャーキー) is Daisuke's personal Ranger Key. While this Ranger Key is known to exist, it has not been used by any of the Gokaigers as of yet.

Etymology
Daisuke's first name was chosen due to the first part's name being similar to the phonetic pronunciation of "Diamond". His last name is written with kanji that means "night light".

Trivia

 * Daisuke is the 3rd Ranger overall, as well as the 2nd White Ranger (after ChangeMermaid for both and MagiBlue for the former), to be Mermaid-themed. Unlike the two of them, Daisuke is male, making him the first male Ranger with a mermaid theme.
 * Daisuke's Monoshorobo Diamaid is the first mecha to have a palindromic name.