First DC animated movie to have a post credit scene.
Lois informs Clark that he missed Perry White's big announcement that his son, Keith, had a baby, possibly referring to Keith Robert White, a young black orphan who appeared in the comics during the 90s, and was eventually adopted by Perry White and his wife.
Stana Katic voiced another DC Comics character, Talia al Ghul, in the video game Batman: Arkham City (2011).
Three of the voice actors - Stana Katic, Molly C. Quinn, and Jason Beghe - are, or have been, actors in the TV series Castle (2009).
At least two cast members have provided their voice to the highly successful Batman: Arkham games. Stana Katic provided the voice for Talia Al Ghul in Arkham City, and John Noble provided the voice for Jonathan Crane, AKA Scarecrow in Arkham Knight.