Which combiner appears in 'Transformers: Fall of Cybertron'?

Who saves Orion Pax in the episode 'War Dawn'?

...it'll already be too late. For all of us."

...It'll mean everyone else in the universe is already dead."

...answer me where your leader is before I remove your head!

"Only until we blast our way through 'em!"

A quiz covering many different Transformers continuities