After the rest of the Titans are sent to the Phantom Zone by Superman, Superboy, Starfire, Wonder Girl, and Tim Drake aka Red Robin are set free from the Phantom Zone by Batman in Injustice 2 #19.

As Superboy, Jon fought beside his father as ... such as facing off against the Injustice universe's Superman and overcoming a cyborg transformation from Brainiac Queen. Still, it's about time ...

Mark Waid has been telling earlier stories of Batman, Superman and the Teen Titans in the World's Finest, now he is going back even further to Superman's Superboy era, and yet more excuses to tell ...