My kid loves cookies (you know, unlike every other child) and Transformers (also unlike every other child). Fortunately, I have a Form+ printer and Adobe Fusion, so making our own Transformers cookie cutters isn't too complicated.
First, a disclaimer: formlabs resin isn't rated for food. Using it to cut or work with food is done at your own risk, and neither I nor anyone else takes any responsibility for your choices. In my case, I'm comfortable that the fully-cured part, covered in acrylic spray, is safe for myself to use to quickly shape the dough. However, whatever you do is your call.
A simple cookie cutter is just the perimeter of the shape, but doing it that way limits the amount of detail I can use. A more advanced cutter has a framework on the top of the cutter that allows you to partially protrude additional details to emboss the cut cookie. This has the added advantage - when 3D printing - of providing more rigidity and stability to the printed product.
I started with the Decepticon logo, and loaded it into Adobe Fusion as a guide. For a full discussion of that technique, look here:
In Fusion, it looked like this.
This was a simple process: trace the shapes, sweep the paths up, then add the background bracing. Holes were carved out to avoid suction in the cutter.
Then, it was printed in Clear v.2 Formlabs resin on my Form 1+.
Finally, it was sanded and sprayed with acrylic.