- Author's Saving Throw: Iris spends the whole episode directly addressing her Badass Decay that saw her go from a fearless journalist to the team's Mission Control.
- Big-Lipped Alligator Moment: Melting Point is bizarrely quick to threaten Iris' life, completely at odds with his characterization otherwise, as a cheap excuse for him to accidentally switch Barry's speed to her. They're later perfectly fine welcoming him onto the team without a word about this.
- Character Rerailment: The show acknowledges that Iris' role has shifted over the past year or so from having her own drives and subplots to being the team's Mission Control (and for at least half of Season 3, Barry's Damsel in Distress), and tries to rectify it by having Iris recognize the problem and restart her journalism career.
- Fridge Logic: Matthew thought his power was to remove powers, meaning he had used them before, and he decided to use them to neutralize dangerous metas. Where's the meta without their powers and the once normal person who gained them?
- Ham and Cheese: Jaco Birch (the guy who gets Erik Frye's powers) has way too much fun, snarling at the "coppers," pronouncing the word "money" with a southern accent, and saying "Long live rock and roll" for no reason at all right before he's defeated.
- Tough Act to Follow: Not only did this episode have the baggage of a very controversial premise, but it also had to follow the acclaimed "Enter Flashtime" (which some consider to be among the best episodes of the series). Furthermore, to some, Barry's "Run, Iris, Run" pales in comparison to Thawne's "Run, Barry, Run" from the pilot.
YMMV / The Flash 2014 S 4 E 16 Run Iris Run