I'm not sure who it is, actually. It was a drawing I found online, printed out and then copied by hand. What you see is my version which has been changed so that the figure in the corner is female. The caption on the original said something like "Silenius, an intrusive, lustful spirit." Silenus were part human, part beast and members of the entourage of Dionysus, so I'm assuming there's a connection. I've been unable to find the original drawing since, unfortunately.