Sankichi Hinodeya (ひのでや参吉 Hinodeya Sankichi) is the creator of the Splatoon manga. She was born on October 29th in Nagano Prefecture, Japan. She has worked on Kanitama-Kun, Arincho-Kun, Mega Man, and The Dempa Men. She also works for the Japanese manga company CoroCoro.
Sankichi joined Twitter in September 2010, posting a sneak peek of Kanitama-Kun. She posted a first look at a manga for Splatoon in April 2015 and in May 2015, she made the very first and unofficial issue of the Splatoon manga and was seen in June's CoroCoro issue. Sankichi made and published another one-shot Splatoon in December 2015 and was in CoroCoro's December issue as well.
- She is the only Splatoon worker/fan in the CoroCoro video whose face is not shown, presumably for privacy reasons.
- Sankichi uses an Erlenmeyer flask with arms, legs, a face and a C on it to symbolize herself.