Check this out - just a normal, everyday pen. Nothing weird or different about it. Definitely not voiced by Peter Cullen or trying to keep the AllSpark out of the hands of the Decepticons or anything.
...OR IS IT?
Yep - this pen is actually Optimus Prime's newest transformation. It's a little subtler than a big rig truck, eh?
You can buy these Autobot leader writing utensils here.