Belphegor Inos (ベルフェゴール・イノス, Berufegōru Inosu) is a defender for Shining Satans.
He has fair skin and is average in height. He has a messy, wine-red hair in the upper part, while the bottom part is tied in a dark-brown ponytail that comes down onto his left shoulder. He also has yellow eyes with coral-pink markings underneath them, he has sharp pointed ears and one sharp tooth coming outside of his mouth.
Belphegor 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 they used Juu to Gou. Belphegor went to stop Inamori Asuto but he dodged him and passed to Kidou Yuuto who used Overhead Penguin to score the first goal for Japan. After Endou managed to stop Satan's Time Trance with his new technique, Fuujin Raijin Ghost, Inazuma Japan quickly tied the score 4-4. At the end of the match, Belphegor 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 demonology, Belphegor is one of the seven princes of Hell, associated with the sin of sloth.