The episode title was inadvertently revealed by director Kevin Smith ahead of its planned reveal when he posted an image of the script cover to his Twitter account. Although he had covered the title with a pen, the paper was thin enough that fans were able to digitally manipulate the picture and pull out text from the second page, which could not easily be seen in a regular version of the photo.
In the comics, Savitar was a Cold War test pilot who gained his powers when his jet was struck by lightning.
This is Kevin Smith's second time directing a "Flash" episode.
HR refers to his working with Joe West (Jesse Martin) as an All Star Team-up which was a DC Golden Age comic title.
In one scene Dr Snow/Killer Frost holds out her finger towards an Alchemy follower and extends it with ice, clearly a homage to terminator 2 scene where T1000 extends his finger into a metal spike towards a victims eye.