August 14, 2004
Scott Menville - Robin, Office Man
Tara Strong - Raven
Greg Cipes - Beast Boy
Khary Payton - Cyborg
Hynden Walch - Starfire
Ashley Johnson - Terra
Ron Perlman - Slade
Dee Bradley Baker - Overload, Plasmus, Cinderblock
Director(s) - Ciro Nieli
Storyboarder(s) - Ben Jones, Kalvin Lee, Alan Wan, Matt Youngburg
Writer(s) - David Slack
Summary: Terra is now Slade's apprentice. She has gladly agreed to obey his every command—including eradicating the Teen Titans. When the team retreats back to the Tower after a bad battle with Terra, Beast Boy convinces them to give her one more chance. Meanwhile, Slade has a plan to coax the Titans out of hiding, and it involves separating the group and taking them down one by one.
- Aftershocks are smaller earthquake that take place after a bigger one in the same area, sometimes months or years after the first main shock. The title not only references Terra's earth abilities, but relates to the fact that this episode comes after "Betrayal".
- It is still unclear how each of the Titans managed to survive their battles, or how they all ended up in the underground crevasse near the Tower. It is possible that they all agreed to play dead and later meet a specific location if it seemed they would not win their battles, so that perhaps Slade and Terra would be caught off guard when the heroes later returned (which did happen). But this still does not explain how each of the team members managed to live through the horrible conditions that led Terra to believe they had died in the first place. The least likely one was Robin's supposed death. Terra crushed him with a boulder and removed his R plate to deliver to Slade. She saw Robin's body. He should have been in terrible condition—he would have at least had some broken bones. Yet the next time we saw him, he was with the Titans and had only minor scratches and bruises.
- Terra's hair veiled one side of her face, similar to the end of "Titan Rising". This gives visual symbolism for being Slade's apprentice.
- Character designer Derrick Wyatt can be seen scanning papers in the office building when Cyborg dropped through the roof.
- In the original comics, Terra and Slade used the Titans' weaknesses to bring them down one by one.
- Although comic Terra hated all of the Titans, she held a particular hatred of Raven because the latter's abilities constantly threatened to reveal Terra's deception (and Raven was very distrustful of her). Just as in this episode, comic Terra gloated over fallen Raven.
- Also in the comics, Beast Boy did not believe Terra was truly acting of her own accord. He initially blamed Slade.
- The recurring theme of reflections, which started in "Betrayal", continues here when Robin forced Terra to look at herself in the mirror near the end of the episode.
- "Where did we ever do to you?" "You were born." Those lines were previously used in the 1995 X-Men TV series between Jubilee and a Neo-Nazi.
- Producer Sam Register on Aftershock: "There was some issues with how bad we could make Terra, and how we end it. Obviously, it comes to a pretty sad end in the comics. So how do we end it in the cartoon so it still means something, but maybe isn’t as violent? And how to deal with having her smoke and drink, which she did in the comic. We couldn’t do that, obviously. But other than that, it was a very simple story about betrayal. And you didn’t have to change too much to make the idea of betrayal work for the show."
- Producer and writer David Slack on understanding Terra: "We definitely struggled to figure out who she was and why she was doing what she was doing. I was looking at the last pass of the final script just bawling my eyes out. I mean, she’s just lost. Something inside her hurts so bad that right and wrong don’t matter anymore."