Tsao-lon ( ツァオロン, Tsaoron) and Gensou (玄宗, ''Gensō'') are an antagonistic Ancient Mamodo team that faced Tia and Megumi Oumi and Wonrei and Li-en.
When the two faced off the four, they were beating Wonrei and Tia at first, destroying even some of their strongest spells with their spells. Eventually, the two teams were barely able to stand. But after Tia used Saifojio on both Wonrei and Li-en, they used their spell, Raou Dibauren, which burned Tsao-Lon’s book.
Tsao-Lon is one of the Ancient Mamodo who was revived by Zofis. He was one of mamodo chosen by Zofis and given a high rank as one of the Four Supreme Mamodo. He serves as a rival of Wonrei and uses the same type of magic which is martial arts.
Gensou
Gensou is a powerful martial artist who loves to fight and has an unquenchable lust for battle. Growing tired of human opponents, Gensou desired stronger enemies to test his strength, and was contacted by Zofis to serve in exchange for getting the chance for battles against powerful Mamodos. He is very physically strong, being able to crack Tia's defensive spell Seushiru with his bare hands, counteract Tia, and hurt Wonrei. He hates to fight weak opponents and only wants to fight strong ones to prove himself the strongest. He was also one of the only human partners of the 1,000-year-old mamodo to not have their hearts manipulated, being that he freely chose to join Zofis. He even continued to fight after his spellbook was burned and his mamodo disappeared.
During Gash's Reign
After Zatch became the king, Tsao-Lon was seen with Rodeaux, Barry and Keith in school in a cool background.
