Nintendo owns the official Mario canon, and all of the base concepts and ideas contained within. Shy is a fan-drawn comic, made for entertainment value only. We aren't getting any money out of this.
Shy is made in Adobe Photoshop CS, using digital toning tools that can be found here: http://psychobob.xepher.net/screentonez/ and here: http://shounenaigo.keenspace.com/tone/
We use the fonts Yoshi's Story (game text) (BRK), VTCSundayKomix, Barbies Jalous Sisters, Viner hand ITC, Roswell Wreckage, Dark Arts BB, Temphis Brick, and probably some others I've forgotten to mention.
The following sites have been used as a reference to us, in writing the script for Shy and for creating the character designs:
http://www.smbhq.com/char3.htm#yi
http://db.gamefaqs.com/console/nes/file/mario_characters.txt
http://www.mariomonsters.com/main.html
http://en.wikipedia.org/wiki/Shy_Guy
http://sprites.fireball20xl.com/NSA/HTML/Mario/yoshi.htm
http://www.classicgaming.com/tmk/mariopedia/
In addition, we need to thank these people:
Red Draco, MSG, Marf, Renkin Wizard, Zaph, RiotRoyale, Druids Twilight, Armanininja, our team of betas and Blinky the Red (for helping with the Yoshies)
AND VIEWERS LIKE YOU (c)