Warning: A significant spoiler for Young Justice season 2 and minor spoilers for the new season 3 follow.
Superhero entertainment has changed significantly since Young Justice premiered in 2010 on the Cartoon Network. At the time, the show was unique for its relatively dark and mature portrayal of teenage superheroes trying to make names for themselves and escape the baggage of their mentors, families, and checkered pasts. But the show didn’t sell enough toys, so Cartoon Network canceled it after two seasons, replacing it with the much zanier Teen Titans Go!.
Now, DC is concerned less with toy sales than it is with wooing streaming subscribers, especially given the competition its subscription streaming service DC Universe will face when...