This is how Roland began in the early development phase of Extreme Ghostbusters. Executive Producer Richard Raynis wanted to see this character as a male. So for a while Roland had long dreads, which were too hip for the bookish character that Richard had in mind. So the dreads became cornrows, then ended up with Roland's final, more conservative, haircut.
I kept pitching different ideas for devices, Julia had a chest piece, this is by no means a well crafted drawing, but a rough that was one of many used to triangulate the characters into what they became. As you can see, this was page 14 of 17 conceptual designs faxed that day to LA from my Australian studio.