Elsa from Frozen and Hades from Disney's Hercules are both characters with blue based color schemes. So what happens if you merge the two?
Well... possibly something like this drawing by AtomiccircuS.
All in all I think it's a pretty effective blending of the two characters. I'd say that Elsa was probably dominant in terms of the facial features, but the look on her face, the hair and elements of the clothing all come from Hades.