Dokuta Pepako https://twitter.com/pepperco

Also known as Doctor Pepperco and 毒田ペパ子

Toaru Majutsu no Index - 4koma Koushiki Anthology ch02: Suki Suki Daisuki Onee-sama A Certain Scientific Railgun Doujin released Jan 11 '15 4-koma Comedy Kuroko x Misaka
BanG Dream! Garupa☆PICO Comic Anthology ch12: Cats and Roses Day After Day BanG Dream! Doujin released May 18 '19 Anime Comedy Music Spin-off