Lego's 1,508-piece Optimus Prime model can transform into a truck, which makes it one of the coolest Lego builds around.

Our races united by a history long forgotten and a future we shall face together. I am Optimus Prime, and I send this message so that our pasts will always be remembered, for in those memories ...

The Transformers brand has been big since the 1980s, with the franchise being "more than meets the eye" for exactly 40 years ...