Moro Seijin is a recurring alien character in the Space Channel 5 series, a rhythm-based video game franchise developed by Sega. As members of the Morolian race, Moro Seijin and his fellow Morolians initiate an invasion of Earth, compelling humans to dance. Their distinctive appearance features round, white bodies with antennae and expressive faces. Although they initially serve as antagonists, their interactions with the protagonist, Ulala, become more comical and friendly as the series progresses, adding charm and humor to the storyline.