Ryoko is a character of the Tenchi Series. She is a demon who formerly worked for Kagato. She is known as Ryoko, the Space Pirate. She is 5,000 years old. She was imprisoned for 700 years inside a cave near Tenchi's house. She was freed and has lived in the Masaki household since. She is in love with Tenchi, but she battles for him with her enemy, Ayeka Jurai. Her transport is a cabbit, named Ryo-oh-ki.