Demogorgon Ano (デモゴルゴン・アノー, Demogorugon Anō) is a defender for Shining Satans.
Demogorgon has tanned skin and a fat body. He has teal hair and three hair puffs, each of them tied with a red hairband. He has small black eyes, a big, dark-brown nose and buck-teeth.
Demogorgon played with his team against Inazuma Japan during the Football Frontier International. He didn't have much defending to do at first since Inazuma Japan was struggling with Shining Satans' plays and their captain, Endou Mamoru, wasn't able to stop Satan Gaul's Time Trance due to the timing of the technique. However, Inazuma Japan's players were able to figure out their opponents plays and quickly tied the score 4-4. At the end of the match, Demogorgon helped Pazuzu Zaham to get up after he failed to stop Haizaki Ryouhei and Kira Hiroto from scoring the winning goal with Penguin The God & Devil and watched with his teammates how Inazuma Japan celebrated their victory.
- In mythology, Demogorgon is a deity or demon associated with the underworld and envisaged as a powerful primordial being, whose very name had been taboo.