The Caballeros and friends go off for their final battle with Baron von Sheldgoose and a resurrected Lord Felldrake.
- Back for the Finale: The Moon-Bots, Lava Lizards, Yokai, Sheldgoose's ancestors, the termites and Tyrone the dragon on the villains' side; the Roman gods, the goblins, King Arthur, the Presidential Ghosts, the Minotaur and the Moai commander on the heroes' side.
- Big Damn Heroes: Pretty much everyone gets a moment like this at some point during the episode.
- First, when Sheldgoose spawns the Moon-Bots from Episode 3, Xandra and the Caballeros spawns the Roman gods from Episode 4 to ward off the Moon-Bots.
- Sheldgoose then spawns the Lava Lizards from Episode 5. The heroes retaliate with the goblins and King Vomit from Episode 6.
- The Yokai from Episode 10 appears from Sheldgoose's zoom point. King Arthur from Episode 11 appears from Xandra's zoom point.
- The Presidential Ghosts from Episode 7 are summoned to fight Sheldgoose's ancestors from Episode 10.
- The Minotaur from Episode 2 is summoned to fight the termites from Episode 4.
- The Moai commander from Episode 5 returns to save the heroes from the dragon in Episode 11.
- Even Daisy, April, May, June, and the bear rug appears to knock Sheldgoose off of Leopold, so that the Caballeros can continue to re-imprison Lord Felldrake in the staff.
- Ari uses a cup of the "wizard-pool" water to re-energize Xandra's powers.
- It could be argued that Sheldgoose inadvertently had the biggest moment by destroying Felldrake's staff, restoring the world back to normal.
- Big Good: As a bit of a surprising twist, we learn that there is one; the wizard Blazebeak, whose life-force has been powering the magical amulets and protecting the Caballeros all this time.
- Brick Joke:
- When it gets to the scene of the Caballeros about to fight Felldrake from the first episode, Xandra pauses the scene and asks if everyone is caught up.
- After Ari closes the doors of the old Sheldgoose Manor, they fall down, just as the door to the cabana fell after he "fixed" it.
- Continuity Cavalcade: Pretty much every important character from previous adventures return here to aid in the battle.
- Deus ex Machina: The "wizard pool", containing the spirit of the wizard Blazebeak and powering the amulets, has not been established earlier in the show - yet, without falling into it, the Caballeros wouldn't have been able to defeat Felldrake.
- Embarrassing Middle Name: Donald middle name is revealed to be Fauntleroy. He's not really happy about it, despite being the new [acting] president of the New Quackmore Institute.
- Empowered Badass Normal: The Three Caballeros already Took a Level in Badass after training with King Arthur. Here, they temporarily become superpowered after "falling into a wizard pool" and gaining the powers of their amulets.
- Fantastically Indifferent: May, after Felldrake has essentially destroyed the world, and everyone is floating in space, only reacts with a dry "There goes the neighborhood."
- Final Exam Finale: Sheldgoose summons obstacles from past to hinder the heroes while the heroes summon allies to counter them. See Back for the Finale.
- Forced Transformation: Sheldgoose gets his revenge on Eugenia by turning her into a "rat-faced worm."
- Hurricane of Puns: After gaining magical powers, Sheldgoose begins slinging puns in a way that would have made Jafar proud.
- Kick the Dog: Felldrake tells Xandra how much he enjoyed having her be his slave and that he's going to do so again.
- Laser-Guided Karma: Sheldgoose's actions lead to him losing his presidental title of the New Quackmore Institute and all of its privileges.
- The Mind Is a Plaything of the Body: When reborn into a physical being, Felldrake, before reaching his adult form, starts to react to the personalities of his aging forms, such as crying as a baby or growing hormonal as a teenager.
- My God, What Have I Done?: A villainous version, Sheldgoose has this reaction when he thought breaking the staff killed Felldrake.
- Nice Job Fixing It, Villain: Sheldgoose breaks Felldrake's staff, returning the world to normal and trapping Felldrake inside him.
- One-Winged Angel: Felldrake's final form is a gigantic, all-powerful demon.
- Pubescent Braces: Felldrake inexplicably gains a pair in his teenager form as he's going through his aging stages after being reborn from the staff.
- Sequel Hook:
- The villains may have been defeated, but they aren't destroyed. The last scene of the episode has them fly off to seek the help of "an old friend" living in a legged house.
- Donald is appointed acting president of the institute until elections can be held, setting up a rivalry between him and Eugenia.
- Series Continuity Error: All the villains summoned by Sheldgoose were allied with him at one point - except for Tyrone the dragon, who was summoned by April, May and June in "Thanks a Camelot" and had nothing to do with Sheldgoose or Felldrake.
- Swirlie: Sheldgoose get knocked head-first in his golden toilet by the girls and the Bear Rug.
- Wham Shot: Felldrake may have been defeated, and his staff may have been destroyed, but he still lives on. Only now, he's stuck inside Sheldgoose's body. They are also flying towards a house with legs...
