Every Transformers line has examples of redecos becoming new characters, and even in 1-2-3 Transformers limited stable of heroic bots, most are repaints of others. Here, Fire Marshal Mike is a repaint of Policeman Pete , while Airlift Andy swooping overhead is Chopper Charlie redone. All four were available individually in 2002. I just paired these guys up rather than use up too many days drawing redecos in black-and-white illustrations that don't really showcase the differences that well.
An Online Amateur Sketchpad