The season 2 episode 9 ends with Henry telling we must wait the next episode to know how he had been kidnapped.
Near the end of season 3, Raul Lombardi shows up after being absent for most of it, then looks like he may put himself in great danger in the following episode. The Visitor then points out it would be stupid if he died right after reappearing in the series.
Cloning Blues: Robotic variant. Each Henri Castafolte robot is convinced to be the actual Henri Castafolte. There isn't any real Henri Castafolte, the closest would be the prototype of the Henri Castafolte series, who is himself convinced to be human and began creating a whole series of robotic clones of himself. This first robot is actually an attempt of creating the perfect robotic mind, designed by a scientist named Germain Castafolte recreating the appearance of a humourist called Henri Bouchard.
Each Henri Castafolte is programmed to suffer from a Heroic BSODwhen he discovers that he is a robot. When this happens, it is necessary to reprogramme him, probably to erase the memory of this event. After one of his Heroic BSOD, the main Henri Castafolte (the companion of the Visitor) manages to wake up before being reprogrammed and remembers that he is a robot. Depression ensues...
The visitor also appears in a french Manga cross-over with City Hall.
Creator Cameo: François Descraques briefly appears as the immaginnary futur son of Raph in "the beer".
Crouching Moron, Hidden Badass: The Visitor can seems pretty annoying and stupid at first glance, but he really believes that he's working towards a brighter future for the humanity, is very dedicated to his task, and can get very serious and cunning when it's necessary.
Remember Mr Lopes from the beginning the second season ? He should have married a baker, and their offsprings would have been responsible for triggering acid rains all over the world around 2300. It's great the visitor prevented this twice. Turns out the baker didn't appreciate to have her life rewritten. She is one of the antagonist of season 3 and she is more than a match for Matteo, Judith and the Visitor in unarmed combat.
Dying Dream: Judith, after being stabbed by Sarah Lombardi. It is triggered by a cybernetic chip implanted in her body because she worked for the Time Police in her original temporal origin, and remained in her after the disappearance of the Time Police. This is an unusual example, as the viewer saw the character being grievly wounded before, and that the hallucinatory nature of the vision is quickly revealed.
Early-Installment Weirdness: The fist few episodes are short independant gags. It's not after a while it develops a story. The fisrt season has shorter episodes, less budget and the visitor's outfit is slightly different.
The End of the World as We Know It: What the Visitor claims he's trying to avoid. The Trope Namer is also used in the credits of the first season. This is also the title of First Season final. Quoting in French (nearly singing) by Joseph in Season 3.
Everyone Is Bi: At least in the future where Judith and Mattéo come from. The trope is nearly literaly invoked by Judith:
False Friend: Raph first meets the Time Inquisitor when she acts as if she's fallen in love with him in order to spy on the Visitor. Even after letting him in on her motive she keeps up the girlfriend act until she receives what she wants.
Fantastic Racism: The Visitor and Henri Castafolte mention racism toward zombies and robots.
Future Me Scares Me: The Visitor's is a delusional Wild Card ready to work for cigarettes and apparently indifferent to saving the world. Note, however, that the Visitor doesn't seem to mind; he's one of his Double's most frequent employers.
Gatling Good: Henri Castafolte uses one against the Lombardi's mooks during the finale of the second season, and then against zombies at the beginning of the third season.
Goggles Do Nothing: One of the accessories worn by the Visitor. However, he does put them on when showing Simon the acid rain.
Gone Horribly Right: In one episode, the Visitor thanks Raph's pals for their participation in the missions by giving them copies of answers to their exams. They use them, get caught, and are expelled.
In the second, the antagonists are the three Lombardi siblings, who are struggling against the Visitor's time modification because preventing certain ecological disasters from happening will in turn prevent their own births.
A bit less in the third, in which the plot is focused on the struggle between the Visitor's team and a firm called "the Missionaries", which has the same goal but with a lot more material, money, and manpower. The Missionaries firm is actually a deception, its true goal is the conquest of the world by its leader.
Head Desk: When Raph has to deal with the Visitor spouting nonsense at him, a hologram from a Time Police agent spying on the conversation, and another hologram from the Future Visitor also trying to spy on the conversation... it ends this way.
I Banged Your Mom: The Visitor uses this as a threat. To sum up, it was something like: if you don't do what I told you, I'll travel to the past to bang your mom and you won't exist.
Identical Grandson: Subverted and mocked. In one episode, the Visitor instructs Raph into preventing his existance by preventing his ancestor from meeting his wife. Said ancestor apparently turns out to look exactly like the Visitor, but is eventually revealed to actually be the Visitor himself, who set up this masquarade to mock Raph and show him how it feels to be seen as a mad man.
The Visitor: Of course! Did you really believe my ancestor had the same face than me?
Interquel: The comic book, titled Le Visiteur du Futur : L'Élu des Dieux ("The Visitor from the Future: The Chosen of the Gods"), which is an original story set between the first and second seasons of the webseries.
Jerkass: The Visitor (especially in the first season), Judith and Henri Bouchard.
Just as Planned: parodied with the Time Brigad leader (actually Ralph's two friends) in season 1, who seems to anticipate practically everything that happens. In the finale, the Time Cop, irritated that they basically based their plan around his incompetence, decide to quit, which they turn out to have planned as well. He then decides as a reaction to help the Visitor escape and save Raph:
Time Brigad leader 1: Ew... did you plan this as well? Time Brigad leader 2: ...Shit.
Mind Screw: In-universe: the Visitor wakes up in a room and finds he has a girlfriend and that he is delusional — He's just an insane guy who thinks he's on a mission to Set Right What Once Went Wrong. Actually, it's just a trap to interrogate him on how he always evades the Time Police.
Mundane Utility: Using time travel to secure a wine bottle from the past, hiding it somewhere, and recovering it in the present. There's also an episode where Raph uses the time travel to try to prove Stella didn't tell him when her birthday is.
Even though the Visitor is arguably the main character of the show, he has never given his name (and nobody's even cared to ask either). There are two instances in the second season where the Visitor is about to give his name but then doesn't. His real name could be William Hunter (cf. the WMG page). It's not Bernard.
Moreover, most of the main characters are only known by their given name: Raph, Judith, Mattéo, Tim, Léo. Oddly enough, Raph's full name is not given neither. In season 1, he says "only my friends call me like that" and in season 2 episode 12, he claims that Raph is NOT a shortcut for Raphael.
Space Clothes: Totally averted in the Visitor's present, where everyone wears rags resembling contemporary clothing. The same is true in the present of the Time Police: the Time Cop and the Time Inquisitor both wear formal clothes. The former wears a uniform resembling that of a French policeman with a few electronic gears and the later a skirt, shirt and jacket exactly like a businesswoman. Played straight with Judith and Mattéo in the second season, where the former wears a stripperiffic outfit and the latter a kind of futuristic military body armour. After joining the Missionaries, Mattéo wears an even more futuristic body armour..
Uncanny Family Resemblance: Subverted. Raph tries to prevent the ancestor of the Visitor from meeting the mother of his future child. After revealing that he is the Visitor posing as his ancestor, he tells Raph: "You thought my ancestor had the same face as me? That's completely dumb."
Episode 6: The missionaires finally show their true colors, Sarah Lombardi is a part of the organisation and is working with their leader, and the visitor is sent to the necrophiliac prison along with Constance.