Yesterday while food shopping at my local Giant I happened to see Energon Optimus Prime in the greeting card racks. It was a birthday card for four-year-olds featuring Energon Optimus Prime. Anyway, I bought a couple. Inside are four (one large) glow-in-the-dark Autobot symbol stickers. I thought it was interesting too becuse most of the TF figures are rated for 5+, so I guess Hasbro wants to start fans early. Energon sure had a lot of party material side products.