Guess who

I did this drawing according to a wallpaper someone made on devart (i can't rmemeber who)

Anyways it was done on A4 paper with pencil, it took a little over 2 hours (I'm slow, so what?), and has many proportions problems, but I must say that I am quite fond of it.

Now as the title says, you must guess who I tried to draw (it isn't obvious, but someone may find)