We also have several of these technical designs in both robot and alt mode. It is here that we see that a few designs had already found their way on toys we already own, like Power of the Primes Starscream's robot mode (the lower half is very similar to the design shown below). there are more designs out there we have yet to see and some missing, like Hot Rod's which we know has an evergreen design from the previously released children's book.
The images of these designs come from the snakas blog and Weibo.
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List images below:
