Had a one-shot where he was the protagonist ｢とある科学の未元物質｣ - ｢A Certain Scientific Dark Matter｣. He’s the second ranked Level 5.
His ability is ｢未元物質(ダークマター)｣ - ｢Dark Matter｣, which is kinda confusing and I don’t yet fully understand it myself. In essence though, it lets him do all kinds of weird stuff, because it doesn’t exist.
Has a pretty big inferiority complex… for being ranked number 2 and not number 1. Yes, really. Despite this, he treats almost everyone below him as dirt.
According to himself and others, he is the “spare plan” in the event something happened to Accelerator. Which only pisses him off more.
He gets very angry easily and seems to have something of a tragic past. In his spin-off, he finds and kinda befriends a young girl called Yuzuriha Ringo. At the end of the one-shot, she ends up dying. This has a pretty bad effect on him.
For some reason, he doesn’t like getting innocent civilians involved… but will do so if he needs to.
He is currently dead… I think?