left behind

matroplex's son kronos aegis panzer or Kronos shield tank has fought along side Optimus prime metroplex grimlock for a long time and now he is left on Cybertron because lack of space on the arc as his father sacrifice himself to fuel the arc with energon and as the planet grew cold and lifeless Kronos designed a alt form for himself to carry his father of world and here he is traveling to another world as he goes into stasis lock drifting in space