Thread:Hiatt Grey/@comment-10109148-20150315220823/@comment-10109148-20150318205721

Because I figured that Lockdown knew how much Thomas was supportive to Optimus,  and when Thomas became a Prime himself, Lockdown figured the creators would want such a rare Prime in their grasp.

And to answer your other question, I felt that our heores would want to get vengence on him for helping Cemetury Wind killed their Autobot firends.