Optimus Primal and Rattrap in “Nemesis: Part 2”

[Quoting the Covenant of Primus] "'In the Spark of an enemy, there will be salvation; and in the darkest hour, there will be a light."

Yeah, from a very unexpected source - old Chopperface's clone. Who'da thunk it?

And let us never forget those other brave 'bots, whose sacrifice safeguarded past, present, and future...