Major spoilers for the series finale of Superman & Lois, “It Went by So Fast,” lie ahead.

Superman & Lois was the last series based on DC Comics characters to air at the network. It was also the last connection to The CW’s Arrowverse (even if it wasn’t technically part of the main continuity of that franchise), which defined the 2010s for the network and became one of the more successful multi-show franchises in TV history.

In the build-up to the finale of Superman and Lois, it was said that it would be a send-off to the Arrowverse as well. This prompted rumors of cameos ranging from Melissa Benoist as Supergirl to the Earth-Prime Justice League.