- Big-Lipped Alligator Moment: We watch Barry go through a portal and come out of another during his test run. If you've seen the Worlds Finest episode of Supergirl, you know that this is the point Barry crosses over into said world. If you haven't you'll probably just be left confused as to why Barry portal hopped especially since, apart from a brief sentence, it is never brought up again throughout the remainder of the episode.
- Fridge Brilliance: Given Wally's part in canon, the phrasing of Zoom's demand "Your speed for Wally" can double as foreshadowing.
- Idiot Plot: Barry finally is fast enough to fight Zoom on equal footing and has a plan to beat him. And he does. And when he does, instead of taking him to the pipeline ASAP, he has a casual conversation with Zoom that would make Blofeld proud. Zoom uses this to escape, but before he does, he states that "family is a weakness". Barry doesn't take the hint; instead of going to his house where Zoom obviously went, he searches the city, giving Zoom enough time to capture Wally, to use him as a bargaining chip to exchange for Barry's speed. When Vibe find out the exact location of both Wally AND Zoom, they agree to Zoom's deal rather than trying to rescue Wally. Zoom then grabs the Idiot Ball and releases Wally before Barry's speed is even extracted, leaving himself with no bargaining chip, and yet NO ONE considers double-crossing him. They follow the deal to a T, knowing perfectly well what kind of monster Zoom is and how dangerous he would be with Barry's speed AND that without it they'd have no way to stop it. And after releasing one hostage, Zoom immediately takes another before leaving.
- Like You Would Really Do It: Barry loses his speed at the end of the episode, but everyone knows it will only be temporary, especially since he was seen using it in the flashfoward at the beginning of Arrow's current season, which is implied to take place not long after this episode.
- Nightmare Fuel: Good god, where to start with this episode?
- In the opening flashback, Hunter's mother is killed right before his eyes... by his father, no less.
- Zoom is such a psychotic maniac that he became Earth-2's Flash to inspire hope just so he could rip it away.
- What an Idiot!: There's no good reason given as to why Barry is so insistent on Cisco opening the portal so he can fight Zoom (outside of Barry being mad about getting tricked), especially since Barry knows that Zoom is dying anyway. The safer thing to do would just be to leave the portal closed and just wait for him to die of his speed disease. Their decision to let Zoom come back to Earth-1 ultimately turns out very badly, and gets Barry's speed stolen and a lot of people killed.
- They Changed It, Now It Sucks!:
- In the comics, Hunter Zolomon was a villain, albeit a tragic one who deluded himself into thinking he could make Wally West a better hero by making him experience tragedy. Here, he's a straight-up monster, and there's really nothing to distinguish him from Eobard Thawne aside from being even more evil. Of course, it's entirely possible that Earth-1 Hunter will follow an arc closer to his comic counterpart.
- Jay Garrick, the very first Flash, is one of the oldest superheroes in the history of comics; while not an A-lister, he's still an Ensemble Dark Horse and a valued mentor to many heroes. Here, he was never a hero at all, if he even existed in the first place.
- They Wasted a Perfectly Good Plot: The Supergirl crossover event finally happens from Barry's perspective, and instead of dedicating at least a part of the episode to it, it's a very brief scene near the opening that you wouldn't be able to tell if you hadn't seen said episode. Especially frustrating as Barry doesn't even mention the fact that he jumped into another dimension or the fact that he met an alien.
YMMV / The Flash (2014) S2E18 "Versus Zoom"