Ah, I'm glad you liked them - I know they weren't too popular with some people, but were sadly necessary due to budget constraints.
Actually, they were made by the same artist who did the backgrounds for 'Devil'.
They were made by taking the character sprites as templates and then painting over them and adding simple shading - the artist is a friend of mine and made them for me as a favour. If you message me on my support email, I can put you in touch with him if you wish.