Claudia Christian broke her ankle off the set, and drank half a bottle of wine to kill the pain before phoning the studio to report the accident. She expected to be written out, but writer/producer J. Michael Straczynski simply added a scene to explain why she walked with crutches, and production continued. Originally Ivanova was going to fight her way free from the Drazi by herself.
Elric's line, "Do not try the patience of wizards, for they are subtle and quick to anger," is almost a quotation from J.R.R. Tolkien's The Lord of the Rings. Gildor, the first Elf to appear in the story, said to Frodo and Sam: "Do not meddle in the affairs of wizards," etc. (Frodo replied: "It is also said, Go not to the Elves for counsel, for they will say both no and yes.")
Elric's line "I see a great hand reaching out of the stars" was later one of the phrases featured in the opening sequence of Season Five.
According to Babylon 5 canon, when the Technomages arrive, Galen is among their number. He is Elric's apprentice, and would later be seen in the Crusade series.
The Technomage Elric is named after a popular fantasy character in a series of books written by Michael Moorcock.