It's Bill

I love Gravity falls, the way those secrets are hidden, ooo~ just tingles my heart xD

This is Bill Cipher, some people say hes a monster but i dunno, he's not much of a monster to me, or a villain, hes more of a neutral for me
I drew him in a way he fits into the show's theme : www.youtube.com/watch?v=enQ7FJ…

Don't decode those letters if you don't want spoilers btw....

Also I based him off of this picture : images3.wikia.nocookie.net/__c…