"Operation Bumblebee Pt 1" was hilarious...lots of great moments. Starscream "working" with MECH doesn't surprise me.
I own the book "Transformers Legends" and in it is a short story that involves Starscream working with terrorists.
Here's a review of it
not my review
There's also a cool story where all the Optimus Prime's and Primal meet and share a drink.
The ending is funny when all the Megatrons meet