Marking Gok's answer sheet...

1. Optimus Prime <tick>
2. Bumblebee <tick>
3. Mirage <tick>
4. Ratchet <tick>
5. Jazz <cross>
6. Megatron <tick>
7. Starscream <tick>
8. Skywarp <cross>
9. Thundercracker <cross>
10. Buzzsaw <cross>
11. Ravage <tick>
12. Skywarp <tick>
13. Starscream <cross>
14. Thundercracker <cross>

Well done so far. So we still need 5, 8, 9, 10, 13 and 14.

(I also find it interesting that all the Autobots have Optimus Prime's head crest.)