Choujin Power: 870,000
Apollo is a Greek-themed Chojin loosely modeled after the god Apollo himself. He's assigned to patrol the Kantō region and was designed as a supporting character for Mantaro early on in the manga, helping him out before things escalated with the DMP.
Once that conflict wrapped up, Apollo heads back to Hercules with The Adams and Gorgeousman to keep training. He makes a quick appearance in the first Nisei movie doing what you'd expect—hanging out at a fan appreciation event signing autographs. Later he teams up with the other righteous Chojins to take on The Cyborg, though that doesn't go great for him.
His signature move is the Pancrush. Interestingly, Apollo actually first showed up as a fan submission on the cover art for chapter 374 of the original Kinnikuman series.
Content compiled by AnimeList.moe from publicly available sources.