He's a big, muscular guy—the kind of person who looks intimidating at first glance. But that's pretty much the opposite of who he actually is. He's genuinely gentle and kind, which makes the contrast between his appearance and his personality pretty memorable.
You'll often see him hanging around small, cute birds in official art and media, which fans think is meant to reflect his calm, peaceful nature. It's a funny visual gag given how massive he is.
He joined the "real" Game Creation Club alongside Inada and Sakuragaoka after things got chaotic with Roka and Chitose. The timing of their arrival was pretty crucial—without them stepping up, the club would've shut down entirely. Their recruitment basically saved the whole thing.
Content compiled by AnimeList.moe from publicly available sources.