Check out this cool transformer costume that actually transforms. Not only does it transform, but it does so while it's being worn! The only down-side is that the creator sells them for the extremely pricey amount of $4000 (USD).

Check out all the Transformer Costumes.

I didn't have a lot of transformers as a kid, but I did have the model pictured here, "Starscream".

(via BoingBoing)