You know those hilarious “cowardly Knock Out” moments, where we see KO screaming hysterically and ducking for cover in the face of something that may or may not be an actual threat?
Those don’t begin, in the show, until after he’s run over by a train on a mission immediately following Breakdown’s death.
That’s not cowardice, that’s trauma, pass it on.
i don’t think it’s the train. he seemed mostly annoyed by it… i think it has more to do with megatron abusing him as a replacement for starscream