The first letter of each episode of Season 4 spells out "Invitation to kneel before Zod"
Among the wedding guests is Icecicle Jr. Though a criminal he has a special relationship with both Conner and Megan as he was there when the two shared their first moments as a couple back in season one and in season 3 Conner admits that it was thanks to Jr that the two of them got together in the first place.
The end credit scene is the first appearance of Kara Zor-El, aka Supergirl, in Young Justice.
Lor learned the hard way why even Darkseid doesn't make an enemy of of Metron. The guy has the patience and intelligence to enact retribution appropriately ironic upon those who anger him.
Cyborg's salvation being an exception, due to the Fatherbox being out of control.
Cyborg's salvation being an exception, due to the Fatherbox being out of control.
When Zatanna starts the wedding music, Lian pats Amistad's hand and he pats it back. Showing that Lian is aware of Amistad's autism; sensitivity to sound is a common trait with it. When potential stressors can trigger a bad reaction, it best to show support.