These three drawings are not dated or well-annotated, so it's a little hard for me to remember exactly when they are from and for what reason they were created. But I probably did them in the first decade of TMNT.
I wish I could remember if I did these with the intent of using the concepts and designs in the comics, or if they were something I did for Playmates Toys. I don't recall ever planning any humanoid robot Foot ninja for the comics, but they were a common sight in the first animated series. It's even possible that these sketches came before the designs were settled on for the way the Foot soldiers appeared in that show... but don't quote me. -- PL