Artist. On her/his pixiv profile page, she/he wrote her/his opinion about reprinting her/his images. Formerly tagged as pocapin.
Japanese name: ポカピン (Pocapin or Pokapin)
The other names: ビス太 (Bisuta or Bista), ポチャピン (Pochapin) or "poca1"
Circle & old site name: kuehnel (クーネル)