- Aside Glance: Sisko gives a brief one to the camera when it sounds like Mirror!O'Brien is guilt-tripping him into staying and helping with the battle.
- Attack Pattern Alpha: Played with. Mirror!O'Brien isn't in Starfleet, so he doesn't know the attack patterns that Sisko orders.
- When Sisko orders the Defiant to attack Mirror!Worf's flagship directly, O'Brien calls it "Pattern Suicide."
- Big Damn Heroes: After initially making light work of the Klingon support ships, the Defiant has major trouble facing off against Worf's much larger flagship. Just when it looks like it might all be over, the raider piloted by Mirror!Bashir and Mirror!Dax flies in to take out the Klingon ship's weapon arrays.
- Big "NO!": Mirror!Jennifer shouts one out right before throwing herself in the way of a phaser blast meant for Jake.
- Casual Danger Dialogue: During Mirror!Bashir and Mirror!Dax's Big Damn Heroes moment:Bashir: Aren't you going to welcome me back?
O'Brien: I never thought I'd be happy to hear your voice.
Dax: You'll get over it.
- David vs. Goliath: The Defiant and a fighter versus Mirror!Worf's flagship. Guess who wins.note
- Doppelganger Gets Same Sentiment: Jake treats Mirror!Jennifer as if she really were his mother. In return, she starts to view him as the son she never had.
- Easily Forgiven: Mirror!Jennifer, as far as Jake's concerned.
- Evil Counterpart: Whereas Mirror!Quark and Mirror!Rom were both honorable and sympathetic towards the rebels, Mirror!Nog is pretty disdainful towards humans, implies that he preferred things when the Cardassian-Klingon Alliance were in control of the station, and frees Mirror!Kira as thanks for disposing of his uncle and father, allowing him to inherit the bar. Kira repays his gratitude with a phaser blast to the chest.
- Famous Last Words: For Jennifer:Jennifer: I knew we were still connected.
- Genre Blind: A mirror universe resident just pops by for a visit? Why not leave your son alone with her?
- He Knows Too Much: Why Mirror!Kira shoots Mirror!Nog.
- I Have Your Son: How the rebels force Sisko's cooperation.
- Instant Death Bullet: Nog shot from far away? Dead as a doornail. Jennifer shot point blank? Survives long enough for a token dramatic death.
- Kidnapping is Such an Ugly Word
- A Lady on Each Arm: How Mirror!Nog is introduced. He offers to share one with Jake.
- My Fist Forgives You: Mirror!Bashir punches Sisko as repayment for Sisko having punched him last time. Similarly, Mirror!Dax slaps Sisko for sleeping with her under false pretenses.
- Mythology Gag: One of Mirror!Worf's lines:
- Never My Fault: Mirror!Worf is naturally infuriated and disbelieving at losing the battle, so Mirror!Garak "helpfully" suggests that Mirror!Kira must have helped the rebellion, with Worf readily turning her into The Scapegoat and vowing revenge when they next meet. In actuality, Kira has next to no impact on the plot, other than killing the mirror incarnations of Nog and Jennifer.
- Rewarded as a Traitor Deserves: Mirror!Nog frees Mirror!Kira as thanks for killing his father and uncle, which allowed him to inherit the bar. She repays him with a phaser blast to the chest.
- Scotty Time: It took two weeks to overhaul the structural integrity field on the Defiant. Sisko has four days to do the same to the Mirror Defiant—and in an interesting bit of role reversal, it's O'Brien's Mirror counterpart giving Sisko the deadline.
- Slave Collar: Mirror!Worf keeps Mirror!Garak in one.
- Taking the Bullet: Mirror!Jennifer takes a phaser shot from Mirror!Kira meant for Jake.
- Too Kinky to Torture: Mirror!Kira laughs off the Electric Torture.
- Unfinished, Untested, Used Anyway: The Mirror Defiant.
- Ungrateful Bitch: Mirror!Nog helps Mirror!Kira escape from her cell—and she shoots him so that he can't talk.
- We Will Meet Again: Before fleeing, Mirror!Kira decides to spare Jake when she learns he's our Sisko's son."Well, in that case, give your father a message for me: tell him I spared your life. That's a debt I intend to collect."
- Would Hurt a Child: Okay, Jake's technically in his mid-late teens by this point, but Mirror!Kira shows absolutely no compunctions about killing him, and spares him for reasons unrelated to his age.
- You're Not My Type: Mirror!Worf's response to Mirror!Garak's comment that as much as he hated Mirror!Kira, he was at least able to "please her" (clearly sexually).
Recap / Star Trek Deep Space Nine S 04 E 20 Shattered Mirror
In a spectacular display of Genre Blindness, Sisko introduces Mirror!Jennifer to Jake. Who is promptly kidnapped so the Terran Rebels can force Sisko to assist in building their own version of the Defiant.