[[quoteright:260:[[Webcomic/CaseyAndAndy http://static.tvtropes.org/pmwiki/pub/images/Bobwastheretoo.png]]]]
''Casey and Andy'' is a completed webcomic by Andy Weir, about a pair of [[MadScientist Mad Scientists]] and their wacky hijinx as they deal with their girlfriends, try to TakeOverTheWorld, and kill each other, ([[RunningGag Repeatedly]]), play [=RPGs=], annoy next door neighbour Jenn, test-drive their inventions and do battle with Andy's nemesis, Grover Cleveland. [[CatchPhrase Bob was there, too]].

The characters of Casey and Andy are based on Weir and his best friend Casey. The other characters are named after Andy Weir's friends, including his cat, Cujo.

It can be found right [[http://www.galactanet.com/comic/index.php here]]. It was on SeriesHiatus for [[OrphanedSeries 19 months between comics 644 and 645]], before Andy finally went back to conclude the final story arc and the strip.

See also ''Webcomic/CheshireCrossing'', an uncompleted second webcomic by Weir, and ''Literature/TheMartian'', his debut novel, published to great success in 2014.
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!!Includes examples of:

* TheAce: Quantum Cop, who starts out knowing everything except bovine dentistry. A strangely high number of his solutions to quantum mechanics problems involve hitting people with sticks.
* AllAnimeIsNaughtyTentacles: Comes up in a guest strip when someone leaves the "Porn-O-Mat" in "Japan mode."
* AllThereInTheManual: [[spoiler: Jenn's occupation was "international jewel thief",]] first revealed if you bought [[IrregularWebcomic David Morgan-Mar's]] C&A TabletopGame/{{GURPS}} module.
* ArtEvolution: No huge shifts, more the difference between two close tones of grey: [[http://www.galactanet.com/comic/view.php?strip=1 First strip]], [[http://www.galactanet.com/comic/view.php?strip=665 next-to-last strip]].
* AscendedExtra: Jenn was introduced as a throwaway character, but -- likely owning to the fact that [[OnlySaneMan she was a (relatively) normal person among weirdoes]] -- she quickly gained prominence and ended up as one of the comic's main characters, with most of the storylines either revolving around or heavily involving her.
* AllMenArePerverts: Yep. But as is frequently shown, AllWomenAreLustful as well.
* ButtMonkey: The clearest example is Jenn. Both Casey and Andy have their moments of this too, Andy especially.
* CanNotTellALie: Quantum Cop can't lie. He eventually gains the ability in the final arc as CharacterDevelopment.
* CardCarryingVillain: Lord Milligan. He goes out of his way to make sure that most, if not all, of the tropes of classic villainy occur come hell or high water.
** The reason he does this is that it also enforces the other rules of being a villain. Like being able to disable a ActionGirl by using the StandardFemaleGrabArea.
* CatsAreMean: And Cujo is a bastard even by cat standards.
* CerebusRetcon: Conspicuously [[AvertedTrope averted]]; the creator is very insistent on not giving an explanation for how the titular characters keep on dying and coming back to life.
* CheatedAngle: One strip mentions that the cartoonist had to move the cat around slightly between frames because otherwise it wouldn't be visible from certain angles.
* CheeseEatingSurrenderMonkeys: [[http://www.galactanet.com/comic/view.php?strip=36 This strip]] embraces the trope.
* ChekhovsGun: The Casey vaporiso-annihilatomat reappears after 168 strips, and the nineteenth century white house teleport-o-mat reappeared more than 350 strips after it was first shown!
* {{Cloudcuckoolander}}: Andy. Casey, by contrast, is more of a [[TheWonka Wonka]].
* ConfusingMultipleNegatives: Casey tries to get the King of Sweden to leave his couch this way. It doesn't work.
* ContractualGenreBlindness: Lord Milligan is an EvilOverlord, with many expected tropes taken to extreme.
* DangerouslyGenreSavvy: The Quantum Crook uses Milligan's flaws to his advantage.
* DeadpanSnarker: Most of the characters have traces of this, but the clearest and most consistent examples are Casey and Jenn.
* DeathIsCheap: Casey and Andy die in strip #1. And then repeatedly afterwards.
* DeusExitMachina: Weir had to write Satan out of some of the arcs or somehow occupy her so that she didn't use her demonic powers to bail Casey and Andy out when they got in a jam.
* DistaffCounterpart: Andy in every alternate universe.
* EarlyInstallmentWeirdness: [[http://www.galactanet.com/comic/view.php?strip=122 This]] rejection letter from God to Satan does not really work with their "loving father/daughter" relationship as presented later in the strip.
* EnemyMime: The Mime Assassin is a walking trope.
* EvilChancellor: [[LampshadeHanging Evil Grand Vizier]] Milligawain, from the Mountain of Mages arc. [[spoiler:Except he's really not bad; Court Wizard Kasor is the real villain.]]
* EvilFeelsGood: One of the perks with [[http://www.galactanet.com/comic/view.php?strip=135 dating Satan]]
* EvilIsCool: Referenced in-universe by (who else?!) Satan [[http://www.galactanet.com/comic/view.php?strip=255 here.]]
* EvilTwin: Quantum Cop and Quantum Crook.
* {{Fanservice}}: Once in a while Weir would take a break from the regular comic to make sexy, somewhat more realistic "cheesecake" pictures of Satan or Mary.
* {{Fetish}}: It's more or less stated during the final arc that [[spoiler:Quantum Cop's turned on by Jen's thieving.]] Kinda puts his job in a new perspective, doesn't it?
* ForInconveniencePressOne: [[http://www.galactanet.com/comic/view.php?strip=141 This strip]].
* FrameBreak: [[http://www.galactanet.com/comic/view.php?strip=6 Here!]].
* GeekyTurnOn
* GeniusDitz: "Brains that run so fast they short-circuit themselves" is a pretty apt description of the titular characters.
* GirlScoutsAreEvil: [[http://www.galactanet.com/comic/view.php?strip=153 Don't]] [[http://www.galactanet.com/comic/view.php?strip=161 ever]] [[http://www.galactanet.com/comic/view.php?strip=162 mess]] [[http://www.galactanet.com/comic/view.php?strip=205 with]] [[http://www.galactanet.com/comic/view.php?strip=220 Don]] [[http://www.galactanet.com/comic/view.php?strip=550 Cindy]].
* GoodAngelBadAngel: Somewhat of a drawback with [[http://www.galactanet.com/comic/view.php?strip=377 dating Satan]]
* UsefulNotes/GroverCleveland: Andy's arch-nemesis.
* HornyDevils: [[http://www.galactanet.com/comic/view.php?strip=152 Lampshaded]]
* IHaveBoobsYouMustObey: TropeNamer.
* ItRunsOnNonsensoleum: many of their random inventions, in varying degrees work on nonsense physics or just '''because'''.
* KidFromTheFuture: J. J., Jenn's daughter (who is born in the last strip, but comes back from the future on a couple of occasions to SetRightWhatOnceWentWrong).
* MadScientist: Both Casey and Andy.
* MediumAwareness: the comic panel borders are the edges of the space-time continuum in [[http://galactanet.com/comic/view.php?strip=6 this strip]].
* MirrorUniverse: Accessed by accident, and the origin of the Quantum Crook.
* MsFanservice: [[http://www.galactanet.com/comic/view.php?strip=178 Satan]]
* NiceJobFixingItVillain: "''[[http://www.galactanet.com/comic/view.php?strip=385 No! Wait! My inventions must not be used for peace!]]''"
* NotAMorningPerson: In one strip, Satan is literally a monster until she gets her cup of coffee.
* NotSoAboveItAll: Jenn, though the OnlySaneWoman of the strip, discovers to her frustration that [[http://www.galactanet.com/comic/view.php?strip=238 she can't relate to actual normal people]] because her life is too weird, and that [[http://www.galactanet.com/comic/view.php?strip=416 the boys have really been rubbing off on her.]]
* NumberOfTheBeast: The comic ended with strip number 666.
* OhCrap: Satan's #2, Azrael, tries to supplant her by absorbing all her evil, thinking it will make her disappear. Instead, he turns her into the Archangel Lucifer, who proceeds to kick his ass.
* TheOmnipresent: Bob, who has the ability to "be there, too". Meaning that ''any'' sentence can be affixed with "Bob was there, too." In essence Bob is (or at least, can be) everywhere.
* [[OnlySaneMan Only Sane Woman]]: Mary in the earlier strips, Jenn after her introduction. [[NotSoAboveItAll Though both of them have their own quirks.]]
* OutOfFocus: Casey and Andy in a couple of the story arcs -- most notably the final one, when Jenn, J. J. and Quantum Cop are the clear protagonists and the titular characters are mainly there as comic relief.
* OverprotectiveDad: [[http://www.galactanet.com/comic/view.php?strip=187 God...]]
* ParodySue: Rob Petrone.
* PerverseSexualLust: Andy, towards Frances Cleveland.
* PlanetEater: Can you blame it for [[http://www.galactanet.com/comic/view.php?strip=386 starting small?]]
* RunningGag: lots.
* SatanIsGood: Or at very least, really adorable.
* ScryVsScry: Quantum Cop and Quantum Crook [[http://www.galactanet.com/comic/view.php?strip=209 pitting their wits]]
* SevenDeadlySins: To Mary's astonishment, Casey manages to [[http://www.galactanet.com/comic/view.php?strip=76 go through all seven of them in just one strip.]]
* SheIsAllGrownUp: An amusing example when Casey [[http://www.galactanet.com/comic/view.php?strip=550 fails to recognize]] Don Cindy the evil Girl Scout.
* SitcomArchNemesis: Mary to Andy. Made worse by the fact that they live in the same house.
* StalkerWithACrush: Jenn to Quantum Cop.
* StandardFemaleGrabArea: Being a traditional dark lord has its [[http://www.galactanet.com/comic/view.php?strip=381 benefits]]
* TheStoic: Quantum Cop. Most of the time.
* StoryBreakerPower: Satan, obviously. Every ongoing story arc needed some reason she couldn't or wouldn't solve the problem with a quick handwave.
* TakeThat: An [[http://galactanet.com/comic/view.php?strip=52 advertisement for Hell]] includes the real-life phone number for the Republican National Committee.
* TeachHimAnger
* ThemeTuneRollCall: The [[http://www.youtube.com/watch?v=flz-qkKEaOA C&A Cast Song]], written by Andy Weir himself, and performed by the band ''Moosebutter''.
* ThingOMatic - All of their inventions are named this way (with [[http://www.galactanet.com/comic/view.php?strip=571 one exception]]). At one point, someone asks them to "build a machine to track time trails", which they say makes no sense, but then are immediately able to once she rephrases the request as "build a time-trail-track-o-mat".
* TheThingThatWouldNotLeave: King Carl XVI Gustaf of Sweden
* ThisIsGonnaSuck: "[[http://www.galactanet.com/comic/view.php?strip=50 This has 'bad day' written all over it.]]"
* TooDumbToLive: As mentioned above, Casey and Andy manage to get themselves killed or kill each other in a lot of very creative, effective ways. A submarine that uses a chimney for air supply? Come on.
** The best part was the Reaper himself coming in on a little motorboat pretty much face palming that even for them it was incredibly stupid.
*** Fatalball, anyone? The TabletopGame/{{GURPS}} supplement makes a large point out of the fact that Casey and Andy hold all the records, ''including the one for Only People Stupid Enough To Play.''
* TooKinkyToTorture: Our heroes have been tied up by the bad guy. Satan obviously could break free from her bonds and free them--but she really likes being tied up.
* UnsoundEffect: [[http://www.galactanet.com/comic/view.php?strip=90 Silence]]
** Also: [[http://galactanet.com/comic/view.php?strip=217 Shank!]] [[ThereIsNoKillLikeOverkill Chop! Shank! Rend!! Impale!! Chop! Chop!! CUT! Shankkity! Slice! Chop! Puree!]]
* WeirdnessMagnet: [[http://www.galactanet.com/comic/view.php?strip=528 Jenn]] has an "abnormal probability curve".
* WriterOnBoard: Some of the strips are this with the author using the characters to tell the audience of his point of view.
* TheWonka: Casey, contrasting and complementing {{Cloudcuckoolander}} Andy.
* XDaysSince: [[http://www.galactanet.com/comic/view.php?strip=134 X seconds since...]]
* YouExclamation: The final story arc kicked off with one of these and a ''Schmakk!!'' to the head.
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''Bob was there, too.''