The symbol on Silver Fox's flying vehicle and costume (a skull with tentacles) is the emblem of the supervillain organization HYDRA. This implies that Silver Fox is now a member of HYDRA.
In the original broadcast of the episode, Jean Gray looks in Wolverine's nightstand and discovers a picture of Logan and Kayla, as well as a cut-out picture of Jean herself (from the episode "Captive Hearts" - the picture also had Scott but he was cut away), a picture of Heather Hudson (from the episode "Repo Man"), and a picture of Yuriko Oyama (from the episode "Out of the Past (Part 1)"). In subsequent broadcasts, only the picture of Logan and Kayla is seen.
In the comics, Weapon X is the secret government program comprised of Wolverine and other mutants. The term "Weapon X" is never mentioned in the episode, only as the title.
The robot is named Talos, after a Greek myth where the god Zeus created an automaton.
Cameo: Omega Red.