Hmm, I've got one possible theory on this. Perhaps one of the Autobots mentions to the kids how Optimus and Megatron were on the side before, and Jack and Miko ask these questions to get more info on the subject. Maybe the conversation goes something like:
Autobot: "Believe it or not, Optimus and Megatron once fought on the same side."
Jack: "Megatron was an Autobot?!"
Autobot: "Well, not exactly--"
Miko: "Optimus was a 'CON?!?!"
Autobot: NO! Just-- Let me explain!
I can picture Ratchet being the one trying to explain this.
DJ1107 wrote:Sadly it is. I don't know something about this Starscream rubs me the wrong way.
I love this Starscream because I'm a big Steve Blum fan. It also helps to see just how much fun the guy has when performing this role, as evidenced by his performance during the BotCon 2011 script reading of "Shadowzone".