I’ll post some of the design work I did on “SING!” at Illumination Mac Guff between 2013 and 2016. In fact, I worked there as a storyboard artist most of the time but I got to help a bit the art department as well. I did mostly costume design and a bit of character development.
Here are some researches on Buster, Eddy and some Buster declinaisons and costumes (some of them unused in the final film)
(last image: costume designs based on 3D models by Fredus)