Transformers Book Series Spoilers

Skybound series is so peak dude
The way they show the difference between the Autobots and Decepticons is just

And holy crap, the picture of Skybound Optimus is just

On the other hand, I only have book 1 and 3, so I can’t see what happens after book 1.
I am NOT reading book 3, cause I don’t want no spoilers >=(