Recap / Titans S4 E9: Dude, Where's My Gar?

"Dude, Where's My Gar?" contains the following tropes:

• Ambiguous Situation: The appearance of the Teen Titans Go! Beast Boy is one since he appears on a television. Is this the "real world" where the show exists, or given that the characters often show some Medium Awareness is this just reflecting that and is actually the Go! reality?
• Broken Pedestal: If the events of "Doom Patrol" didn't already do this, Gar learns that Dr. Caulder is responsible for the deaths of his parents and many others.
• The Cameo: Many in Gar's trip across the multiverse:
  • The sequence starts with a glimpse into Earth-Prime, where Gar witnesses Barry Allen sprinting through Central City.
  • He's then knocked into another Earth by a bolt of red lightning, where he is confronted by Courtney Whitmore and the Cosmic Staff. Brec Bassinger appears in the flesh here.
  • After returning to the nexus between universes, Gar then glimpses Alec Holland in his swamp and Billy Batson / Shazam flying across Philadelphia before the incident detailed in Creator Cameo.
  • Another version of Beast Boy then appears on a television.
  • Then, in a series of audio-only cameos, Gar is assaulted by the voices of Harley Quinn, Doctor Fate, Jonathan Kent, and three versions of the Joker.
  • Finally, Jovian Wade's Cyborg makes an appearance at the ending of the episode, being the one to find Gar.
• Creator Cameo: Grant Morrison, creator of The Red, appears as themself, interacting with Beast Boy.
  Morrison: I can see you! Do you see me?
• Et Tu, Brute?: Downplayed in that the Chief isn't present in the scene, but Gar is horrified to learn that the man who saved his life also killed his parents.
• Fusion Dance: Dominic uses his powers to fuse a scientist with an ape who is dying of the mysterious virus, so that they will die together.
• The Multiverse: The episode has cameos from several characters that reconfirms that Titans exists in the multiverse established by Crisis on Infinite Earths (2019). However it also confirms that Harley Quinn (2019) exists as an Alternate Universe, as does Teen Titans Go! (although while Go! Beast Boy only appears within a television, the characters are often shown to be aware that they are fictional leaving this an Ambiguous Situation).
• Musical Nod: An abbreviated version of Pinrar Toprak's Stargirl theme plays after Beast Boy acknowledges her as another hero.
• Mythology Gag:
  • The letter that Gar reads is addressed to Avery Sunderland, expressing Niles Caulder's disinterest in The Green and Swamp Thing.
  • Freedom Beast calls Gar "The Changeling", which is Beast Boy's grown-up alias in the comics.
• Refused the Call: Gar is told that he is to be the new Guardian of the Red, and that he must abandon the Titans to do so. Gar declares that that is not happening.
• The Reveal: Caulder engineered the outbreak that killed Gar's parents and nearly killed Gar himself, only to save Gar as part of his plan to eventually achieve immortality.
• Wham Shot: When Gar sees the signature of Dr. Niles Caulder (a.k.a. Chief from the Doom Patrol and the man who saved him from the Green Plague) on documents in the lab that created the Green Plague.

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