Natasha "Calisto" Warmington is a member of the Sonic the Comic Online creative team, as an artist, and has provided art for wallpapers and comics. She is a Message Zone moderator and chatroom op for STCO, and is currently working on more ideas for the online comic.
- Issue 244 - The Fandom Menace (colours)
- Sonic the Poster Mag 2007 - pin-up (colours)
- 15th Anniversary Special - variant cover and pin-up
- Sonic the Summer Special 2009 - Brotherhood (B&W art)
- Hallowe'en Wallpapers 2010 - organiser and several pin-ups
- Hallowe'en Wallpapers 2011 - Shadow the Hedgehog pin-up