Blastronaut
The Blastronaut is an astronaut inside the ship who gets a mission to destroy the alien invaders who are trying to take over the Earth. He/She made his/her debut in the minigame Shoot-'Em-Up in Rhythm Heaven.
Physical Appearances
Though it is unknown how they look like without the ship since they don't shop up normally, they are credited as a character in the cast credits. The ship is colored white with a red line on it, the cockpit's glass is blue (green in the game), and the engines are gray with green holes inside. Most people often mistake the Shoot-'Em-Up Radio Lady as the one named Blastronaut, but she has her own profile.
In "Crew's Log", It is shown that the Blastronaut has been fighting the alien invaders for a long time and that they have nearly lost view of themselves often. However, it is the Radio Lady's voice reminds them of who they are. The Blastronaut sees her as a dear friend and waits for the day they'll be able to come home to see her again since he/she keeps fighting the invaders from taking over the Earth.