* Rex StormingTheCastle in "Rabble". He takes down about seven Evos, cures two of them, and never stops or breaks into a run.
* And then just a few minutes later gets his butt handed to him in an MOA for Quarry.
* The end of "The Forgotten" [[spoiler:where Rex outsmarts White Knight by making him look like an even bigger ass and gives full credit to the Providence soldiers WK had verbally trashed moments before.]] Our hero! [[spoiler:Perhaps that week of TrainingFromHell did Rex more good than it seemed at the time.]]
* "What Lies Beneath"
-->'''Rex:''' What does it look like? I'm curing him.
** Another stunning moment comes from Six after Rex breaks a vital piece of machinery Biowulf angrily comes at him and immediately Six is there with his swords at Biowulf's neck and tells him to not even breath or else. This troper did not see Biowulf take a breath.
** Dr. Holiday got a particularly epic moment she got where she saved Agent Six and Rex by rapid-firing at a huge monster, driving it back. Six's gobsmacked expression said it all.
---> '''Six''': Wow.
---> '''Rex''': ''Yeah''.
* "Plague". [[spoiler: White Knight. MiniMecha. That is all.]]
** Not to mention that Rex [[spoiler: destroyed his own contingency plan. The thing White Knight had specifically designed to take down Rex should it prove necessary was destroyed by him, while Rex was suffering from exhaustion and the MiniMecha was at full capacity with its intended pilot. Serious BadAss points for Rex.]]
* Six vs. White Knight. They ''both'' get multiple [=MOAs=] during that one fight.
* "Payback" gives us new!Rex vs. new!Kleiss. It is suitably epic.
** The whole episode is epic. In this episode there is also:
*** Dr. Holiday (and sibling) vs. Skalamander
*** Noah just grabbing a gun and joining the fight against all the Evos.
*** Six vs. Van Kleiss's {{Mook}}s and vs. Van Kleiss himself
*** White Knight giving Biowulf a piece of his mind.
*** Even the nameless Providence soldiers get one for blasting back Van Kleiss's invasion forces.
*** Don't forget Bobo Haha. When Rex and Noah are about to be beset by a bunch of Evos, Bobo shows up and blows them all to smithereens.
---->'''Bobo Haha:''' You see what you get? ''[throws away {{BFG}}]'' That's what happens you interrupt. My. NAP. '''Bobo gets cranky!''' ''[starts blasting with dual pistols]''\\
'''Rex:''' I learned that the hard way, too.
*** When the [[ThemeMusicPowerUp theme music kicks in at the end]]. It should easily be the poster boy of the trope.
* Dos has a minor but fantastically delivered one in "Divide By Six":
-->'''Rex''': ''(having just heard Dos speak some Spanish)'' ¿Eres de Mexico?\\
'''Dos''': ''¡España! (smacks Rex in the face with his cane)''
** Rex and Six have a joint one later when they, in perfect, wordless unison, take down Dos, Tre, IV, and Five.
*** And then there's Six's retort when Dos question Rex's usefulness.
---->'''Dos''': This boy cannot possibly save a man like-
---->'''Six''': This ''boy'' has faced things that would make ''YOU'' people ''RUN AND HIDE.''
*** Even more awesome when you remember that whatever Rex has faced, Six has as well. Once again, we are reminded that being only the sixth deadliest man on the planet does not in any way stop him from being ''the'' most {{Badass}}.
* Rex's brother Caesar breaking into Providence to rescue his little brother.
* The first thing Rex does in the very first episode is an MOA. He freefalls from a Providence ship at breakneck speeds, and punches a giant EVO so hard he ends up knocking him out in one shot. Bad. Ass.
* "Night Falls": Cesar knocking down freaking Hunter Cain and telling him [[BigBrotherInstinct "Mess with my brother, you mess with me!"]]
** Hunter Kain thinks he can push around old ladies.
--->'''Kani:''' Grandma, step aside.
--->'''Abuela:''' I stand with my family.
--->'''Kain:''' Have it your way, I'll take all of you down!
--->'''Abuela:''' You obviously haven't met my family. (''signals Rex to release her family... [[spoiler: OF EVO WEREWOLVES that fill up the courtyard, Hunter Kain's eyes go wide as he realizes how screwed he is'']]
** Abuela ''will'' beat the crap out of you if you threaten her family, [[spoiler: even if they are EVO werewolves that can take care of themselves]].
--->'''Rex:''' (''to Abuela as she beats down Kain's men with a SimpleStaff'') I can't believe we're not related!
* "Family Holiday": Six comes very close to [[spoiler: performing a HeroicSacrifice]] to help Holiday's sister.
** The entire episode was an MOA for him. It's also (possibly accidental) FridgeBrilliance with the episode number. Episode 36. 36 is 6 squared.
* "Crash and Burn". Ladies and gentlemen, we now have [[spoiler:Double Builds]].
* How does the crossover special ''[[GeneratorRex Generator Rex]]/[[WesternAnimation/Ben10UltimateAlien Ben 10]]: Heroes United'' start? [[spoiler:With Rex and Ben facing off in one of the most exciting battles in WesternAnimation history.]]
** And that's just how it ''starts!'' Among other highlights is [[spoiler:Ben going Upgrade and merging with ''Rex''. Sure, it's not what wins it, but dang was it awesome to watch!]]
* "Black and White" gives us Black Knight vs. White Knight. Really, the whole episode is wall to wall awesome.
** Also, Captain Calan is White Knight's inside man. To keep the pretext around Black Knight's people, he willingly and smilingly let White Knight punch him in the face. Gotta respect that.
* "Deadzone" has Rex tear through an entire Providence squadron with ease. By the end, there's not a single vehicle in the air.
* Holiday knocking [[VoluntaryShapeshifting Scarecrow]] out with a pipe at the end of ''Mind Games''.
* In "Assault on Abysus", Rex has teamed up with Biowulf to gain access to a Master Control Nanite, when Providence attacks. They tear their way through the EVOs, but when they cross Rex he leads them into a trap that takes them all out. Once these happens, all of the EVOs left standing begin chanting Rex's name. Made even sweeter by the fact that earlier Skalamander, a former enemy of Rex's, told the Providence agents that Rex was gonna kick their asses.
** When Rex is being Shelled by the [[EliteMooks Black Pawns]]. Circe and Biowulf pull a BigDamnHeroes. Circe blows a few away while Biowulf swipes at their leader. HE gets knocked back, and looks fine, until Biowulf tosses up the Alpha nanite that they were looking for, having picked the Pawn's jacket with his long claws.
* "Enemies Mine" looks to be something of a swan-song for Rex. [[BadassNormal Hunter Kane]], [[EmpoweredBadassNormal Gat]][[BunnyEarsLawyer locke]], [[UnstoppableRage No-]][[BigCreepyCrawlies Face]]. [[AndZoidberg and]] [[CloudcuckooLander the Biker]] all team up for no other reason than to take revenge on Rex. Individually, each of them gave Rex serious trouble on their own. Even worse, they're actually being ''efficient and methodical'' about finding and killing him. In the end,[[BatmanGambit Rex plays them all for fools and gets them locked up again]]. But before he did ''that'', [[CrowningMomentOfAwesome he fought all four of them at the same time and won.]] [[BadAss He wasn't particularly tired out afterwards]].
* In "End Game", Rex kicks [[spoiler:the powered-up Consortium's collective asses so badly that they're forced to merge into a HumongousMecha to defeat him.]]
** One for Six and his PreAssKickingOneLiner when he discovers the true nature of the black pawns.
** Also one for Providence's [[spoiler:TheCavalry]] moment toward the end, where it's also revealed that [[spoiler:the majority of Providence turned back to White Knight's side]].
** Rex [[spoiler: turning into giant mech made up of his Omega-1 nanite builds and wrestling the Consortium.]]
** Also, when Rex encounters Cesar again, [[spoiler:he says nothing to him. All he does is walks up to his brother, punch him in the face hard enough that Cesar falls to the ground, and keeps walking.]] Stone cold. Stone cold and ''awesome''.
** Van Kleiss gets one for [[spoiler:tricking everyone into thinking he really did go insane until he finally made his move to take the meta-nanites for himself. It didn't pan out but he still played everyone like a fiddle.]]
** Last one goes to Rex again for [[spoiler:using the meta-nanites to kick off a revolution by curing nearly every EVO in the world.]] The music that accompanies the scene also counts as a CrowningMusicOfAwesome.
* And, of course, the series ended on a high-note with "Rock My World", the entirety of which Rex spent beating the hell out of legions of evo-clones in the form of the most obnoxious kind of ugly jerk, accompanied by an AnimationBump and great music.