The Nightship or should it be called Knight Ship. Since according to Lockdown it was once belonged to Transformer knights who crusades the universe exploring. He turned it into a prison ship. Optimus is familiar with the original specs as he knew there is ship attached. It may have been once an Autobot ship. It also has a fighter sized ship that has elements of the DOTM Ark. Not to mention Decepticon fighter variants. The film continuity may have had the Knights of Cybetron once. Only they are explorers. the expanded backstory of Evac from TF The Ride indicate he is the last Knight of Cybertron. I'm not sure if the Dinobots are knights as Optimus recognizes them only as anciant warriors.