Hakugei

Hakugei (白鯨) is the name used for the name of the roller coaster referred to as White Whale (formerly White Cyclone), a Jettaroid associated with the ride located at Nagashima Spa Land (ナガシマスパーランド) located in Nagashima, Kuwana, Mei, Japan.

Initially created to be ShiroCosta of the Himitsurangers, the conversion of the IRL attraction soon took its tole and nearly became scrap metal thanks to Tayio Nasca. He. however, returned from the dead as Daiadosta, the 6th ranger of the Himitsurangers.

Unlike Lemurseighteen's initial guess that Hakuegi would have the traditional orange track seen on many RMC's, the ride have blue track (ex. Twisted Cyclone at Six Flags over Georgia).

Origins
Unlike the other 4, who had input from Akira Shinmei, White Cyclone was created 100% by Jefu and his men to complete the team (even though all 5 were actually created at the same time).

He was assigned to White Cyclone, which was special in Japan's second wooden coaster after Jupiter and the White Jet Souls.

Rise of Southern Cross
When Jefu's nephews, Akira and Stella, came to visit him for the summer, the Southern Cross Army rose from the depths of the world to resurrect a demon of the past, Ocean Bride Cestria.

After a run in with their lost founder, he ended up discovering a new machine in the ocean, Machine Kujira, he began to face worse damage from battle that Jetta Armor was not protecting him from. He wanted to sacrifice himself to stall the efforts to bring Cestria back by killing Tayio Nasca, but was killed by him instead.

Because of his death, he sent his nephews to join his teammates in his place.

Steel on Wood, Daiadosta!
However, this discovery of Machine Kujira in Mie Prefecture caught the attention of Teri and Seji to bring him back to life just like Rocky Mountian Construction had already done to 8 roller coasters, including White Cyclone.

Including upgraded weaponry, White Whale was upgraded to White Whale [he is usually called Hakugei (白鯨) by the others in show, thus the title of the article].

Personality
White Cyclone was initially planned to Bandit's foil, with Bandit being the difficult one, but became rather curios, worldly, and determined.

Hakugei retains that determination and a formidable rival to Nasca.