Ratchet when clambering down to the ground after trying to fix the ground bridge, it sparked and sucked him in. Before shooting him out the other way. And that's when he knew this wasn't his base.

It didn't take a few days or so for Ratchet to realize what kind of sunshine and rainbows he was in. The autobots were.. heroic. And aside from that, the appearance differed. They had blue optics. Strange.

Further studying, he was in the wrong universe. After he tried fixing the ground bridge that day. Explains how easy going and nice the others were. That he was never use to. He hated it. They were all so weak. Filled with morals.

And Optimus. He was.. soft. Heroic, selfless, caring, it made Ratchet's tank churn. His Optimus was nothing like this false one. Ruthless, dark, and evil.

Those few cycles he spent trying to act like this universes Ratchet. Referring to Optimus Prime as 'Optimus' as it felt foreign. As he is supposed to call him Lord Prime. But this wasn't his.

Further disgusted the Medic of Doom when he realised this Optimus and his little weak medic were intimate.

And he had to act like this pitiful universe' Ratchet and act like it..

-- It was when Optimus stepped into the Medbay and approached him with a gentle smile that was all to Foreign for Ratchet. It wasn't cold.

"Maybe you should Rest, old friend." Old friend..

He stopped Infront of the medic, blue optics scanning him. "You've worked enough, yes?"