>>5930018He completes the transformation into Fortress Maximus and fires on Metroplex with his many weapons before using the Master Sword to stab him with such precision as to destroy Tarantulas's control device without injuring his fellow Autobot. He warns Tarantulas that Metroplex may be theirs for now, but next time he tries something like this, he'll find himself cut down by the blade of justice. As he's arrested and taken away, Tarantulas mutters that with Fortress's condition, there may not be a "next time".
In the aftermath, Chromedome asks Fortress if he's okay, and he responds that he's feeling much better after getting his secret of his chest and is satisfied as long as he can protect the Legends world.