Legends of Tomorrow: In “Zari, Not Zari”, the Legends wander across a filming location for Supernatural while in British Columbia, and at one point poke around the Impala.
Lucifer (2016): Amenadiel mentions an angel named Castiel in season 4.
Sam, Dean, Cas and Death cameo in this◊ panel of Li'l Gotham.
In one Full Frontal Nerdity strip about a Halloween RPG event at a supposedly haunted house, which advertises valet parking, Frank makes a sarcastic comment about the Mystery Machine, and is told he should update his references and use the Impala.
◊ panel of Li'l Gotham.
