Monstructor
From Botch's site comes the great pic of Monstructor, re-colored from the Japanese released Dinoking. The image was great, and although I dislike this style of tech spec (red decoders forever baby!), this spec was the first in which I figured out most of the Photoshop tools and actually used them.
Credits
Monstructor Image: Botch's Transformers Box Art Archive
Monstructor Tech Spec text: International Transformers Tech Spec Archive
Base Tech Image: Bristleback's Tech Spec from the International Transformers Tech Spec Archive