Hasbro have released more official images as a part of their San Diego Comic Con coverage. This time out we have some official images of the Kre-O Battlechangers series – Optimus Prime, Bumblebee, Grimlock and Starscream.

These four bots are a bit different to other Kre-O sets – they can transform between their modes without needing to be disassembled! Arguably, this is what fans had hoped for from the Kre-O series from its inception – check out the images of these cool block toys and see what you think.