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A comic from the Franco-Belgian school by artist Philippe Liegeois and writer Bob de Groot (better known as ''Turk & de Groot''). It follows the eponymous character, inventor Léonard le Génie (Leonardo the Genius, loosely based on real world inventor LeonardoDaVinci) and his clumsy "disciple" Basile.

The stories vary in length from one or a few pages up to a whole album. The basic storyline is as follows: Leonardo has thought up some new invention, and needs the help of his assistant to build and/or test it. Basile, being a HeavySleeper, first needs to be awoken, using another invention, explosives or just plain old cartoon violence. As the building or testing proceeds, Basile suffers AmusingInjuries, either from his [[BadBoss sadistic master]] or through [[TooDumbToLive his own incompetence]]. The story usually ends in one of these ways: Basile goes a step too far in annoying Leonardo and is chased by him, Basile finally gets fed up with the abuse and retaliates on Leonardo, or the invention fails spectacularly and both Leonardo and Basile are chased out of town by an [[TorchesAndPitchforks angry mob]].

Other characters in the comic are:
* Raoul the cat, comments on the action and is sometimes seen applying first aid to Basile or repairing the property damage.
* Bernadette the mouse, comments on the action and is occasionally chased by Raoul in WesternAnimation/TomAndJerry style. She has taken over first aid duty from Raoul in the recent stories.
* Crâne the talking skull (A [[AlasPoorYorick reference]] to ''{{Hamlet}}''), comments on the action.
* Mathurine (Saartje in the Dutch translation) the housekeeper, is sometimes the victim of a failing invention, but also tends to put both Leonardo and Basile back in place if they make too big a mess.
* The Great Albert (a time-travelling Albrecht von Bollstädt), a [[TheRival rival inventor]]. Although one album is just one long story about a huge battle between the two, in later albums they are shown to be on more or less friendly terms. Comes with a clumsy assistant of his own.
* The Villagers: Sometimes seen chasing Leonardo and Basile out of town after a failing invention destroys (part of) the village.

A 20-episode AllCGICartoon was made in 2009.

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!!This comic provides examples of:

* AccordionMan: Just one of many ways in which Basile gets mutilated.
* AllJustADream: A few gags.
* AmusingInjuries: Basile, either at the hands of Leonardo or through his own incompetence. Leonardo and the rest of the cast aren't always safe either.
* AnachronismStew: Although the stories supposedly take place in the 15th century, Leonardo has electricity and modern tools at his disposal, and has built computers and robots, amongst others. Somewhat justified by him being an inventor, but still...
** [[LampshadeHanging Lampshaded]] at least once; Leonard invents a photo camera and, on having put the film in an envelope, realises there's nowhere to mail it to. "Do I have to invent everything myself?"
* AnvilOnHead: Leonardo has a tendency of whacking Basile with anvils, mallets and other heavy, blunt objects as punishment for various slights.
* BadBoss: Leonardo, although the occasional role reversal shows that Basile would arguably be even worse, given the chance.
* {{BFG}}: Léonard's blunderbuss, [[HairyHammerspace which he keeps in his beard]].
* BrilliantButLazy: Basile, in those rare moments when he's neither sleeping nor being tormented by his employer, turns out to be a gifted inventor in his own right. While Leonardo was inventing the bicycle, he came up with the motorbike; and he once single-handedly built a Saturn V rocket.
** When Leonardo invented the safe and got a little too arrogant about it, Basile one-upped him by inventing the cutting torch.
* BunglingInventor: Sometimes, Leonardo invents something that fails spectacularly (often destroying the village) or is just plain useless. Don't call him this to his face though, unless you like getting "blunderbussed".
* TheCameo: Leonard invent television and everything that's being broadcast comes to life in the living room. This end with the cartoon channel with several toons showing up: [[UFORoboGrendizer Duke]], [[WesternAnimation/LooneyTunes Tweety, Sylvester]], WesternAnimation/TomAndJerry and several others.
* CanisLatinicus: Written on the ends of their beds are Leonardo's and Basile's Latin names: ''Maestro Genialis'' and ''Disciplus Simplex''.
* CapturedByCannibals: several stories.
* CartoonBugSprayer
* CatchPhrase: '''"DEBOUT DISCIPLE !"''' ''("WAKE UP LACKEY !")'', "Je sers la science et c'est ma joie" (''"I serve science and it's my joy"'')
** Also Basile's trademark *sniff* when he's injuried
* CatsAreSnarkers: Raoul.
* ChewToy: Basile.
* CoolAndUnusualPunishment: Leonardo is a master of this, much to Basile's chagrin.
* CoolCar: Leonardo has a pretty cool car, especially for an inventor supposedly living in the 15th century. It can even transform into other vehicles...
* CranialEruption: Just one of many types of {{Amusing Injuries}} Basile suffers.
* DeadpanSnarker: Raoul shows traits of this.
-->'''Basile''': Testing? That's usually where my misery starts...\\
'''Raoul''': Misery? Oh no. You mean catastrophic disasters.\\
'''Basile''': * sniff*
* DemBones: Crâne.
* DiggingToChina: Leonard intented to in ''Génie en sous-sol''. He had to build a machine as he admitted his disciple could not do it with a shovel.
** However, in a gag, Basile ''did'' it with [[SurrealHumor a sprint car and a roof]].
* DuckSeasonRabbitSeason: When Basile would prefer to stop testing the anthropomorphing spray...
* EEqualsMCHammer
* EveryoneChasingYou
* FavorsForTheSexy: Happens when Leonard turns (surgically) Mathurine into "Jennifer". It was actually a [[BatmanGambit Batman Gambit]] from her.
* ForScience
* FunnyBackgroundEvent: When not commenting on the main action, Raoul and Bernadette are often engaged in their own activities. Especially in the older comics these are small stories by themselves.
* GadgeteerGenius: Leonardo, the self-proclaimed greatest genius in the [[strike:world]] [[strike:galaxy]] universe. To his credit many of his inventions actually work quite well. Sometimes too well...
* GladIThoughtOfIt: Most of the times Basile has an idea of his own.
** But you can be certain Leonardo will remember it was Basile's idea in the first place when it fails after all...
* HairyHammerspace
* HealingFactor: Basile seems to have regenerative abilities on par with Wolverine. :-)
* HeavySleeper: Basile, waking him up takes high-yield explosives or similar violence. Most of the stories start with Leonardo waking Basile up by some unorthodox means. Basile can also instantly fall asleep at any time.
* HilarityEnsues: Basile's clumsiness is often a source of amusement to the rest of the cast, especially Raoul and Bernadette.
* HumongousMecha: In an AffectionateParody of mecha-based {{Anime}}, Leonardo and Albert each build a giant mecha looking like themselves and fight it out. Leonardo calls his Leonorak, a ShoutOut to the French-language version of ''UFORoboGrendizer'', Goldorak.
** This is also one CrowningMomentOfFunny, especially the introduction of Leonorak:
--->* CRRRAAAASSHH*
--->'''Basile (waking up groggily)''': Ah, I see through the hole in the roof that it's dawn already!
--->'''Basile''': :rotating gears in think bubble:
--->'''Basile''': THROUGH THE HOLE IN THE ROOF!!!??
--->'''Leonardo (from Leonorak)''': Apprentice, shiver and quake before Leonorak!!
--->'''Basile (shivering)''': W-w-w-what d-d-do y-y-you th-think I'm d-doing, m-master?
--->* CRRRAAAASSHH*
--->'''Basile''': I b-believe th-there c-comes the c-competition, m-master...
* HyperspaceMallet: Leonardo can pull a variety of objects from his beard. Most often seen are mallets, anvils and his trusty blunderbuss.
* IdeaBulb: Sometimes used straight, but often toyed with. When Leonardo has a particularly good idea, or a series of ideas, he starts lighting up and making sounds like a {{Pinball}} machine or VideoGame.
** Played with once. Leonardo needed an idea to make a broken lamp work so he... had one, caught the IdeaBulb and replaced the broken one.
* IdiosyncraticEpisodeNaming: The title for every album includes the word "Génie" ("Genius").
** Partially LostInTranslation, the Dutch titles are sometimes missing the word "Genie".
* IfMyCalculationsAreCorrect
* InherentlyFunnyWords: a two-page gag is about it.
* InstantBandages: Basile, after suffering AmusingInjuries. Sometimes [[JustifiedTrope justified]] by showing Raoul, or more recently Bernadette applying first aid.
* InsultBackfire:
-->'''Leonard''': Your stupidity sometimes is so rich that I wonder if I shouldn't lock you in a Swiss safe.\\
'''Basile''': I'm not touched with flattery.
* LampshadeHanging: Raoul does this occasionally, such as wondering aloud how Basile manages to heal in between scenes.
* LevitatingLotusPosition: Leonard encounters an entire squadron of monks flying like this. One even shouts mayday because he has a leg cramp, meaning he can't get the landing gear out.
* LighterAndSofter: The 2009 CGI cartoon made characters look cuter and toned the violence down in comparison to the original comics.
* MadScientist: Some of Leonardo's inventions are downright wacky, and he also has a tendency to meddle with chemicals and strange reagents, often with explosive results. Don't ever accept a drink from him...
* MassiveNumberedSiblings: Léonard often seeks for a name in Basile's family to give it to his inventions.
* NationalStereotypes: When Leonard went traveling around the world, every foreigner he came across was a national stereotype.
* NegativeContinuity
* NoFourthWall: The characters are aware they are in a comic, and Raoul occasionally addresses the reader directly.
** Not to mention speech bubbles, which have been fast frozen by the invention of the freezer, and spray painted on -when Leonard invented the censor, just to name a few.
--> '''Raoul''': Hey, it's our reader! Welcome to a new album!
* NonFatalExplosions: At worst they will burn Basile to ashes or scatter his body parts (bloodlessly) over the room, but he will be alright in the next scene.
* NoOSHACompliance: Leonardo doesn't give a damn about Basile's safety or well-being, so Basile frequently has to do very, very dangerous work.
* OcularGushers: Enough to drown the house when Leonard invents pessimism.
* PuttingOnMyThinkingCap: Leonardo has a number of gadgets to help him concentrate. They usually involve strong coffee, or holding him upside down to improve the blood flow to his brain.
* RunningGag: The waking of Basile at the start of a new story and many, many other examples.
* ThePiratesWhoDontDoAnything: Leonard and Basile usually refer to each other as "master" and "apprentice", but the master doesn't teach and the apprentice doesn't learn.
** FridgeBrilliance: it's an internship. Basile thus learns how to do things by doing them.
*** So far he has only learned how to be a sadist. Leonardo teaches ''that'' by example.
* TheRival: The Great Albert. The album ''Genius contra Genius'' is entirely about a huge battle between the two, but later stories show them to be on more friendly terms.
* ShoutOut: The stories occasionally feature elements from other comics. For example, the red-and-white-checkered moon rocket from the ''{{Tintin}}'' albums ''Recap/TintinDestinationMoon'' and ''Recap/TintinExplorersOnTheMoon'' shows up in a few stories, one of which is titled ''Genius to the Moon'' (and appears in the album with the same name).
* SpeechBubbleCensoring: An amusing inversion where the text is censored by the image. Leonard uses an aerosol [[CensorSteam spray]] on the bubbles.
* SpeechBubblesInterruption
* SquashedFlat: Yet another common [[AmusingInjuries amusing injury]], often involving a hydraulic press or similar tool.
* StuffBlowingUp: Happens all too frequently, but it's alright, they are all NonFatalExplosions.
* SweepingAshes: The usual result of Basile being hit by NonFatalExplosions or XRaySparks.
* ThisIsGonnaSuck: Basile, when he knows the pain is coming.
* TimeMachine: Leonardo has build a few, and some are occasionally used in stories, taking him either to the prehistoric or to modern times.
** And yes, one of them is actually [[Film/BackToTheFuture build into a]] CoolCar. ShoutOut, anyone?
* TooDumbToLive: Not only does Basile stay with an abusive master, he simply can't get anything done without seriously injuring himself.
* TorchesAndPitchforks: The villagers sometimes chase Leonardo and Basile out of town after one explosion too many.
* UnsoundEffect: A variation of this trope used for comedy. Verbs are often used instead of common onomatopeis, describing the invention being on-work, and Basile hurting himself.
* WrongParachuteGag: Two similar gags:
** One comic has the disciple open the parachute, only to reveal a sheet of paper from the maid Mathurine, saying the parachute is in laundry.
** In another comic, a similar joke is made by Leonardo accidentally handing Basile the backpack containing their lunch instead of a parachute.
* XRaySparks: Happens every time Basile has to power on a new invention.

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