I'm a huge fan of H.P. Lovecraft, sometimes I forgets to mention it.
The monster isn't based on anything described by Lovecraft.
I made this drawing when I was boring in class, it might be a little inspired by one Lovecraft tale called "The Haunter of the Dark" (I'm not sure, since I read it translated to Spanish)
I know the drawing has a sort of flaw in the character's hand but well, too lazy to correct. I listed as a traditional only because all the lines are like that, the green stuff was digital.
PS. Lovecraft FTW