I had done this animation in greyscale to make my point. Character design, built up, injection of humour. Sometimes humour comes in the element of surprise.
I like to use characters such as super heroes and also aliens. There is a bit more room for creative expression when this is done.
On top of that, the crazier the idea the crazier the design the more suitable it is to design a story.
When there is an element of surprise which is funny and unexpected a creative slant is given to it.
A second element is the personal touch. It is easier to relate to a character when there is a point that we can relate to.
It is never easy to find inspiration and for us in the creative industry, we try to have a few points of references that will give us a wider range for creative expression. I hope that the few ideas will be helpful.
credit to @zomagic