Krypto, also known as Krypto the Superdog, appears here as a puppy.
After Krypton explodes, there is a shower of green flaming rocks falling behind Kal-El's ship, the first appearance of Kryptonite.
Sul-Van compares Jor-El's ego to Argo in size; later, in "Little Girl Lost," Argo will be revealed to be Krypton's sister planet, and the home of Kara In-Ze/Supergirl.
This episode is one of only two episodes of the series from which Superman is absent (as he only appears as baby Kal-El). The other is New Kids in Town (1998).
Tony Jay (Sul-Van) previously played Nigel St. John in Lois & Clark: The New Adventures of Superman (1993).