Though it was cut for time, there was an attempt to include a Supergirl (2015) Easter egg. When Lois quits her job at the Daily Planet, she was to collect her belongings from her desk, which included a picture of her and Clark with his cousin Kara.
In a scene between Clark and Lana, Lana tells Clark "Oh, you have the same look on your face as you did in high school. Like you got the weight of the world on your shoulders". In the 12th episode in the first season of the Superman- inspired television show, Smallville, Lana Lang (Kristen Kreuk) comments on Clark Kent's (Tom Welling) newfound, relaxed personality by saying "You're just less... Clark Kent like. It's kind of nice. You seen more relaxed. Like you haven't got the weight of the world on your shoulders". Coincidentally, Smallville's versions of Clark and Lana are in their freshmen year during season 1.
Chrissy Beppo is named after "Beppo" the super monkey, a Kryptonian monkey first introduced in Superboy (1959)