No, not literal pets. Just your sort of "personal canon" ideas. I have two: Barricade is Soundwave. They both speak in a monotone voice and have little buddies. Barricade suddenly disappears. Soundwave is in his Cybertronian mode throughout RoTF, which Barricade could have easily reverted to after running. And remember, these are just codenames. Soundwave has also been paired off against Bumblebee recently. Also, Unicron is Cthulhu. Winged humanoid, tendrils, bringer of chaos, it makes sense. Unicron is just what Cybertronians call him.