In 1996 during production on 'Superman the Animated Series' I was given a Villain to design and for the life of me I couldn't remember his name. I referred to the character as James Coburn ( 'In like Flint' 1967). It was my director's idea for me to taylor my design to look similar to Coburn.
I was given the assignment of designing Clark Kent's parents. Here's a sample design of the age progression for Mr. Kent.
The photo on the right was taken of me during Halloween (along with a Philip Stark water bottle) , while I was in production on 'Superman the Animated Series'. If you look closely on the right side of my animation desk, you can see a sketch for "young Mrs. Kent". Below, is the final version of that design.