[[quoteright:260:https://static.tvtropes.org/pmwiki/pub/images/Bobwastheretoo.png]]

''[[http://www.galactanet.com/comic/view.php?strip=1 Casey and Andy]]'' is a completed webcomic by Creator/AndyWeir, about a pair of {{Mad Scientist}}s and their wacky hijinx as they deal with their girlfriends, try to TakeOverTheWorld, kill each other ([[RunningGag repeatedly]]), play [=RPGs=], annoy next door neighbour Jenn, test-drive their inventions and do battle with Andy's nemesis, UsefulNotes/GroverCleveland. [[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.

The comic 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.
* AdvertisedExtra: UsefulNotes/GroverCleveland is touted as Andy's nemesis, but only shows up for a few arcs and one-off gags.
* AffablyEvil: When you look a little closer at them, most of the major characters in the comic (apart from Quantum Cop) are pretty horrendous people who will lie, cheat, steal, commit murder and try to take over the world without any qualms -- but they're also genuinely likeable, amiable, and usually easy to get along with. A special mention must go to Satan; sure, she's the literal Devil and she's an unashamed CardCarryingVillain, but she's very sweet, polite and friendly.
* 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 [[Webcomic/IrregularWebcomic David Morgan-Mar's]] C&A TabletopGame/{{GURPS}} module.
* AnotherStoryForAnotherTime: [[spoiler:Andy's "Exploding Hamster" era mentioned in the epilogue.]]
* 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]].
* AscendedDemon: Satan briefly returns to her status as an archangel during Azriel's attempted takeover of Hell (which serves as an example of ShownTheirWork -- according to Christian theology, Lucifer was an archangel before being cast out of Heaven).
* 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. Andy weir even claims that he came to view her as the comic's main protagonist over time.
* AllMenArePerverts: Yep. But as is frequently shown, AllWomenAreLustful as well.
* ArtisticLicenseReligion: Satan is portrayed as the ruler of Hell, and also as being God's daughter.
* BackstoryInvader: The guest strips by Rob Petrone (starting [[http://www.galactanet.com/comic/view.php?strip=492 here]]) feature Rob insidiously inserting himself into the title characters' lives (and the title). [[http://www.galactanet.com/comic/view.php?strip=501 It doesn't end well for him.]]
* BeliefMakesYouStupid: The author admits to having certain...opinions about organized religion that show up in the comic.
* BornInTheWrongCentury: [[spoiler:The Religious Zealot is left in 1886 where people share the same fervor and beliefs as him. He's pretty happy about it.]]
* ButHeSoundsHandsome: "I do not know this brilliant and handsome Lord Milligan you speak of. I am Lord 'Smith.'"
* 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.
* 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.
* DivineInfernalFamily: Satan (who is portrayed as an attractive young woman, and is also Andy's girlfriend) is shown talking to God, Whom she refers to as "Daddy" ([[http://www.galactanet.com/comic/view.php?strip=187 and Who at least sometimes refers to Satan as "my little girl"]]).
* 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.
* ExtremeOmnivore: The Planet Devourer.
* {{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]].
* FriendlyEnemy: Sure, Lord Milligan wants to kill Casey and Andy, but that doesn't mean he won't play the occasional game of TabletopGame/DungeonsAndDragons with them.
* 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.
* HellOfAHeaven: As his girlfriend is Satan, [[http://www.galactanet.com/comic/view.php?strip=179 Andy is sent to heaven as eternal punishment]].
* HolyWater: One storyline sees Satan square off against another demon... and he's packing a squirt-gun. As it turns out, it's filled with holy water blessed by a dying pope on Easter Sunday directly over the holy sarcophagus of St. Peter.
* HotAsHell: Played straight with the uber-sexy Satan, who loves Andy, but still subjects him to the tortures of the damned sometimes.
* IHaveBoobsYouMustObey: [[http://www.galactanet.com/comic/view.php?strip=329 Jenn]] is the 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).
* LeavingYouToFindMyself: [[spoiler:Casey has Andy move out in the final strip as part of preparing to marry Mary.]]
* ManChild: Andy is the endearing kind; he never loses his childlike enthusiasm and wonder. Casey as well, due to sharing Andy's love of nerdy discussions. [[spoiler:Part of the reason he has Andy move out is feeling the need to grow beyond this.]]
%%* 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]]
* MundaneWish: In [[http://www.galactanet.com/comic/view.php?strip=30 one strip]],a genie offers Andy the choice between eternal world peace, end to world hunger, or a pastrami sandwich. Andy chooses the sandwich.
* NiceJobFixingItVillain: "''[[http://www.galactanet.com/comic/view.php?strip=385 No! Wait! My inventions must not be used for peace!]]''"
* NotAMorningPerson: [[http://www.galactanet.com/comic/view.php?strip=537 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.
* OppositesAttract: During a time travel storyline in which Jen accidentally change the past so she hooked up with Andy, it turns out Satan hooked up with the Religious Zealot.
* 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.
* 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?]]
* RiddleForTheAges: How do Casey and Andy keep coming back to life, yet not remember it or know why it happens?
* RockPaperScissors: Andy and Casey play to decide who cleans the reactor core, [[http://www.galactanet.com/comic/view.php?strip=48 only their version involves dynamite (which beats rock), and cyber-roach (which beats dynamite).]]
* RunningGag
** Land Pirates coming from nowhere to steal things.
** Casey sadly sitting on the sidewalk while the house is on fire and being hosed down. [[http://www.galactanet.com/comic/view.php?strip=600 In one comic]], {{subverted|Trope}} when an explosive compound Casey is about to use is stolen by a land pirate; the last panel is him sadly sitting on the sidewalk while the house is perfectly fine.
** Andy's rambling trains-of-thought, which often annoy Casey.
** Any pun being [[LamePunReaction responded to]] by the pun police.
** Quantum Cop outsmarting Casey and Andy when they try to use physics to weasel out of a traffic ticket.
** Every single alternate-universe Andy is a woman, to Andy's puzzlement.
** And of course, [[DeathIsCheap Casey and Andy dying]] as a result of their inventions.
* 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.
* SkintoneSclerae: In the early strips.
* 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: Jen's goal with Quantum Cop is to teach him how to lie, so he can work undercover. He finally learns in the last arc.
* ThemeTuneRollCall: The [[https://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, [[http://www.galactanet.com/comic/view.php?strip=628 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. [[spoiler:It's implied he even died there.]]
* 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.
* TwoScenesOneDialogue: Quantum Cop and Quantum Crook [[http://www.galactanet.com/comic/view.php?strip=209 pitting their wits]].
* TyrannicalHomeownersAssociation: Sometimes, uneven enforcement isn't a product of favoritism. [[https://galactanet.com/comic/view.php?strip=127 Mabel]] of the homeowners' association goes after Jenn for having a lawn gnome because it "reduces the property value of the whole neighborhood." However, she completely ignores the nuclear missile behind Casey and Andy's house next door, openly admitting that she's scared to go to that house. She then moves on to policing Jenn's dating habits.
* UnexplainedRecovery: Casey and Andy are "mad scientist roommates who periodically die." They always get better, sometimes immediately.
* 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".
* WhamLine:
--> '''[[http://www.galactanet.com/comic/view.php?strip=643 Quantum Cop]]''': "Back in 2006, Jenn is [[spoiler:an international jewel thief]]."
* WhereAreTheyNowEpilogue: The very last strip covers what happened to the major characters.
* 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.
* YourMimeMakesItReal: The Mime Assassin. His first shown spree is stopped when Quantum Cop manages to [[HoistByTheirOwnPetard ensnare him in an invisible box.]]
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''Bob was there, too.''