* ActorAllusion: In "Operation: Wingman". Noah, who is played by Fred Savage, goes to prom with Claire, a girl voiced by Danica [=McKellar=], who is well-known for playing Savage's love interest Winnie Cooper in ''Series/TheWonderYears''.
* BonusEpisode: The last episode of the series aired was "Rock My World", which doesn't really have anything to do with the overall plot. However, it seems that the producers realized it would be the very last episode instead of "End Game" and threw in an AnimationBump, AwesomeMusic original to that episode, some light {{Fanservice}} by bringing back Holiday's little sister, and crafted the plot to be just 22 minutes of [[CrowningMomentOfAwesome Rex being awesome]] to let the series end on a high note.
* ExecutiveMeddling: For the ConspiracyTheorist in you, this might be the reason that JohnCena had to step down from voicing Hunter Cain in episodes after the debut. It's a shame because Cena [[HeReallyCanAct did a surprisingly good job]], but it's probably likely that WWE executives didn't want their number-one draw (whose primary audience is little kids, mind you) connected to an AxCrazy, [[{{Hypocrite}} hypocritical]], [[FantasticRacism fantastic racist]]. That…or [[StatingTheSimpleSolution Cena's WWE schedule is just too time-consuming to make time for voice-acting.]]
* FakeBrit: Creator/TroyBaker, an American, uses a British accent when voicing Van Kleiss.
* FanNickname: "Sleevespace" seems to be the popular term for the sleeves in which Six keeps his fold-out katanas.
* HeyItsThatVoice: Lots to keep track of here. For starters:
** Creator/JohnDiMaggio is Bobo Haha andHunter Cain's second voice.
** Music/GreyDeLisle is Dr. Holiday.
** Creator/HyndenWalch is Breach.
** Rex is [[SpyKids Juni Cortez]].
** Creator/TroyBaker is Van Kleiss
** Creator/JKSimmons is White Knight.
** Fred Savage is Noah.
** Creator/BrentSpiner is Rylander.
** Claire is [[Series/TheWonderYears Winnie Cooper]] and [[WesternAnimation/YoungJustice Miss Martian]].
** Creator/FeliciaDay is Annie.
** Creator/JasonMarsden, Creator/DanteBasco, Creator/KevinMichaelRichardson, and Creator/MarkHamill show up in "Rabble" as Evo-criminals in UsefulNotes/HongKong.
** Vyvan Pham ([[WesternAnimation/Ben10AlienForce Julie Yamamoto]]) is Cricket.
** "Divide by Six" gives us Creator/CarlosAlazraqui as Dos, Creator/JimCummings as Tre, Creator/FrankWelker as IV and One, and Olivia d'Abo ([[WesternAnimation/TheLegendOfTarzan Jane]], [[WesternAnimation/JusticeLeague Star Sapphire]]) as Five.
** Cesar is [[Series/SixFeetUnder Federico Diaz]], [[WesternAnimation/TeenTitans Mas y Menos]], [[Film/PlanetTerror Wray]], [[Series/UglyBetty Gio]].
** Black Knight is voiced by Creator/JenniferHale.
** Gatlocke is [[VideoGame/MarvelVsCapcom3 Rocket]] [[WesternAnimation/AvengersEarthsMightiestHeroes Raccoon]] and [[WesternAnimation/TeenTitans Malchior]].
** Who would've thought [[WizardsOfWaverlyPlace Harper]] would be Dr. Holiday's sister?
** Creator/YuriLowenthal is Moss.
** James Horan ([[WesternAnimation/TransformersPrime Wheeljack]]) is Dr. Fell.
** Creator/LaceyChabert is [=JoJo=].
** Creator/DanteBasco is Tuck.
** NolanNorth is Dr. Branden Moses.
** Creator/SteveBlum is Sebastian and Leon.
** Creator/MauriceLaMarche is Valve.
** Creator/QuintonFlynn is Beau.
** Creator/FredTatasciore is Noface.
** Creator/MichaelEmerson is Alpha Nanite.
** Wrestling fans would recognize Hunter Cain's first voice is from Wrestling/JohnCena which ''really'' goes into PlayingAgainstType considering Cena's stance as a {{Face}}.
* PlayingAgainstType: Creator/HyndenWalch as Breach.
** Also, Music/GreyDeLisle as Dr. Holiday can be seen as this.
* KeepCirculatingTheTapes: only the first 9 episodes have ever been released to DVD; thankfully, the entire series is on iTunes and Netflix.[[note]] This includes the BonusEpisode "Rock My World", in case you were wondering. [[/note]]
* RelationshipVoiceActor:
** Daryl Sabara (Rex), Jennifer Stone (Beverly), and Creator/MariaCanalsBarrera were [[WizardsOfWaverlyPlace TJ Taylor, Harper, and Teresa Russo respectively]].
** Fred Savage (Noah) and Danica [=McKellar=] (Claire), were also love interests in ''TheWonderYears''.
** Creator/MarkHamill is an antagonist to Creator/DanteBasco, [[AvatarTheLastAirbender Again]].
* ScrewedByTheNetwork: The back half of the final season went straight to [=iTunes=], despite network promises that it would actually be aired. It did actually air... ten months later, where it was quickly shown over a few days in the morning, and is still missing two episodes.
* TalkingToHimself: [[Creator/TroyBaker Van Kleiss and Biowulf]].
** Agent Six and Captain Callan, despite minimal interaction due to the latter's overall lack of screen time, are both voiced by Wally Kurth.
* WhatCouldHaveBeen: Apparently, original art designs showed that Rex would have bore more resemblance to his ''M. Rex'' look.
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