Gaia's Vengeance: The Polters attacking Emelka in reaction to the ravages caused by the Noxines.
Gale-Force Sound: Miranda yelling for Kabrok blows Amalia's hair.
Gender Bender: Evangelyne and Amalia as well as a few extras during the Brâkmarian Gobbowl arc, thanks to a magic potion. Unusually, all of them are strictly female-to-male gender benders. Justified since women aren't allowed to even watch Gobbowl matches, let alone participate, in Brâkmar. The vendors make a killing selling the potions to female sport fans.
Also Nox, depending on how much wakfu he drains from the Eliacube.
Godhood Seeker: The Siblings/Brotherhood of the Forgotten consist mainly of demigods who feel vindictive toward their divine parents and whom their leader Oropo intends to topple and replace the current ruling gods of the World of Twelve. Oropo himself intends to become a "supreme god".
Going to Give It More Energy: Rubilax's power of growing more and more with each hit is turned against him in season 1 episode 22. Something similar happens to him in season 2 episode 9.
Very narrowly avoided in episode 16, when a big stalactite falls right between Sadlygrove's legs — which Rubilax finds uproariously funny.
Rubilax himself, in Sadlygrove's body, gets kicked by Evangelyne below the belt line in season 2 episode 3.
Also happens to Ruel in episode 16 of season 2 by a bratty Iop child.
Eva does this to one of the wrestlers at the Trool Fair.
Group Hug: One happens in season 2 episode 3 when Yugo, Amalia, and Ruel find out that Sadlygrove is still alive... except it's quickly subverted, since the body is still inhabited by Rubilax.
Guys Smash, Girls Shoot: Evangelyne and Amalia primarily attack from a range, while Ruel, Yugo and Sadlygrove favor more close combat. Cleophelia subverts this somewhat.
The first two seasons are pretty much this. It involves the heroes having to travel to one or more places, meeting many Wacky Wayside Tribe on their way.
Averted with Season 3, though, which has no filler episodes (since the plot wouldn't allow it), and thus is only half as long.
Hand-or-Object Underwear: In season 2 episode 11, the gender-bent Fanservice Extra trying to sneak in the stadium covers her chest with an arm when the potion stops having effect. Later, the same thing happens to a topless Amalia, who grabs a gobbowl shield to hide herself.
Encre Noire spends most of "A Fistful of Kamas" atop Ruel's head, though not really out of his choice. He sometimes rides his adopted daughter Elaine's head too.
Heart Symbol: Seen occasionally floating around Sadlygrove when he looks at Evangelyne.
Help, I'm Stuck!: In season 3 episode 6, Amaila gets stuck in a trapdoor because her butt. Yugo and Elely pull her arms to no avail. She gets out only when Yugo teleports behind her and pushes her butt through the hole.
High Heel Hurt: In "Miss Ugly," as part of an "ugly princess disguise," Evangelyne has to wear high-heeled sandals. As she's an Action Girl and totally unaccustomed to them, this results in several embarrassing slips and falls for her, including one down a full flight of stairs.
Hold Up Your Score: Sadlygrove in episode 4, when he's judging the beauty... ahem, ugly pageant.
Hold Your Hippogriffs: For any Earth-based expression using an animal, it is replaced with a species from the world of Wakfu — though the name used is always close enough to keep the meaning readily understandable. And it's not just animals: the first spoken line in the entire series is roughly, "What the bwork?"
Homeworld Evacuation: An alien variation. It's revealed in Season 2 that the Eliatropes aren't originally from the World of Twelve: they were forced to evacuate into space from their original homeworld onboard the Zinit due to the war against the Mechasms driving them out, draining wakfu from planets they passed by to fuel their ship. The Council of Twelve ultimately decided to settle on the World of Twelve and make it their people's new home, although Qilby wanted their people to remain Space Nomads cruising the Krosmoz. It's later again revealed that Qilby wanted the Homeworld Evacuation to occur so that he could explore the Krosmoz.
Hopeless Suitor: Armand toward Evangelyne, who has absolutely no interest in the prince and considers him an egotistical dick with pig breath.
A minor one in episode 24. For a little while it looks like the Sadidas might be able to defeat Nox's minions before they can construct a portal to bring in his giant clockwork-spider doom-fortress. Unfortunately it's all a distraction. The horde of minions aren't even building a portal, they're just there to keep the Sadidas occupied while one of Nox's other minions mind-controls a group of Sadidas into building a portal for him (working them to death in the process). The good guys don't realize this until it activates.
Far, far worse in the finale, when Yugo, Adamaï, and Nox travel 20 minutes back in time. For a brief moment Yugo thinks that they might be able to prevent Sadlygrove's death, only to discover that they fell a few minutes short.
Rubilax in full rampage mode stops dead on his tracks at the mere sight of Goultard (and tries to inconspicuously slither away while in the body of a giant worm — hilarious).
Several cases in succession with the chase from episode 21 of season 2, turning it pretty much into a Benny Hill Show scene.
Horror Hunger: "The Thursters" are a race of intangible ghouls who are cut off from ever touching what they treasure, stranding them in an eternal, lonely thirst.
Horse Archer: Or rather, Dragoturkey Archer. Evangelyne is riding a dragoturkey the first time we see her wielding her bow. She's riding one again in episode 24 and in season 2 episode 2.
Hurricane of Puns: Some of the character entries on the Wakfu official website. The one for the Dragon-Pig is especially bad about it.
Hurt Foot Hop: A good one in season 1 episode 22: Sadlygrove is suffering from heat stroke in the desert, and is convinced the ruin he's stumbling toward is just another mirage. So he gives a good kick to its stone wall — barefoot. Cue the one-legged dance.
In season 1 episode 8, Evangelyne scolds Sadlygrove for his bad table manners... just before starting wolfing down herself.
Then in episode 10 she calms Amalia down after finding out the boys have been playing with her Doll. Amalia then argues how she would feel if the guys were playing with her bow. Cut to the guys doing just that, and now Amalia is stopping Eva from killing them.
Season 2 episode 5 has the "I Warned You" example below.
I Am Not Shazam: In-universe example. The names of the races and the gods that they follow are often used interchangeably. For example, an Enutrof's Fingers (a follower of the god Enutrof), is often just called "an Enutrof".
I Am Who?: Yugo finding out he is the last of the Eliatropes until Qilby appears. Also him being their reborn former king.
Iconic Outfit: The Eliatrope hat which there are a lot of variations upon, but it always has the "ears" and very often the "tail" with the tuft at the end.
The Igor: Igor, who speaks with a strong Eastern-European accent, clearly evokes this. He's not a hunchback, however, but a huge Shushu mirror.
I Have You Now, My Pretty: Happens twice to Evangelyne, first with Vampyro (who definitely wants her body, but for Shadofang to possess), and then with the pirate captain Smisse Monde.
Evangelyne tries this on a Rubilax-possessed Sadlygrove in season 1 episode 19. However, he only starts regaining his senses after crushing both Eva's arm and bow.
Attempted by Amalia on a monkeyfied Yugo in season 2 episode 21. Doesn't work much.
Sadlygrove, during the duel against Prince Armand.
Kriss Krass, during the match against the Masked Gobbowler.
Immortal Apathy: Qilbythe Traitor has a supernaturally eidetic memory which forces him to perpetually retain all his past lives' memories across his reincarnation cycle, functionally making him eternal. As a result of several millennia of enduring this and knowing it will never stop, Qilby doesn't give much of a damn about anybody's feelings except his own anymore. He's willing to callously sacrifice an entire world and all its inhabitants so he can continue selfishly cruising the stars and keep his overloaded brain distracted, even tormenting and trying to kill his extended siblings (knowing they'll only reincarnate with their memories wiped if they die); with the justification that all mortal lifeforms are nothing but passing specks of dust that come and go constantly in the larger universe.
Given by Yugo several times in season 1 episode 21 after he constantly falls or runs into things.
Amalia protests this in season 2 episode 12, after she's been put in a full-body cast and the two commentators basically start her obituary.
The Imp: Grufon qualifies as the harmless kind while sealed in the map... but in episode 13 he becomes the Not-So-Harmless Villain kind when he gets free and possesses an arachne.
That's how it works in the original game, too. There's only a few exceptions, like swords and unarmed combat. There's even a class which is designed to fight with giant clockwork needles!
Nox's Clockwork Mecha of Doom is at its simplest a giant ambulatory pocket watch.
Indy Escape: The classic boulder appears shortly in episode "The Dragon-Pig", along with most typical Temple of Doom traps. You can tell it's going to be this from a glance at the map before it's even shown on screen. Note that here the tunnel is perfectly circular, hence there's no corners where to hide from the boulder, even if you're a small piglet.
Inertia Is a Cruel Mistress: Yugo's portals work this way, but given his ability to orient them any way he wishes, it's quite effective.
Irony: After being separated from the rest of the party for multiple episodes in season 3, Tristepin reaches the Feca demi-god's floor, who asks for his underwear to pass without a fight. Tristepin accepts the deal and is granted free passage. When Goultard says it would have been easier just to beat him up, Tristepin replies he's trying to not use violence as a first resort and says Yugo would have agreed. In fact, Yugo's first choice earlier in the same scenario was to use violence.
Whenever Evangelyne uses an ice arrow, lots of ice form around the point of impact.
Nausea encases Rubilax in ice with a magic potion in episode 7.
McDeek's freezing ray in episode 9.
The classic comic-relief-encased-in-a-square-block-of-ice happens to Sadlygrove (and Rubilax) in episode 17 after falling in a frozen lake. Adamaï melts the ice with his fire breath.
Insult Backfire: The Iop King uses the ongoing insult of his race being Dumb Muscle to his favor towards helping Quilby, claiming that the Iops' brains are too small to consider treachery.
In the End, You Are on Your Own: Yugo against Nox in the season finale with Adamaï knocked out and the rest of the Five-Man Band otherwise distracted, mostly because of Razortime.
Rushu: You think you can upset me your insults? Goultard: By Iop, no! I know you're way too stupid to understand even half of it.
And that's saying something when you come from a species known for being dim.
It Always Rains at Funerals: In episode 22 of season 2. It immediately stops once Ruel drops the act of playing dead.
It Has Been an Honor: Evangelyne in episode 7, when surrounded by an army of evil dolls.
It Makes Sense in Context: The main hero team call themselves The Brotherhood Of Tofu. To anyone not familliar with the plot this may sound like a food fanclub, but in-universe a Tofu is a bird-like creature, and Az, Yugo's almost-insperable pet, is one. The team wanted to have a name that would remind them of all they went through together once they have to part ways, and they ultimately chose Tofu due to their affection for Az and how it reminded them of the good times they shared. In a way, this kind of name is similar to Berserk's Band of Hawk group, and it quickly spreads in-universe: by the time of Season 2 many people and officials adress the team as the Brotherhood.
I've Heard of That — What Is It?: Sadlygrove pulls one on the party's first visit to the Sadida kingdom, after Evangelyne advises them that in the royal palace, they should act like gentlemen and with courtesy.
Sadlygrove: Please Eva, who do you think I am? I am a knight; I know about "gentlemaning". [stage-whispers to Ruel] Who's this "courtesy" guy?
I Warned You: In season 2 episode 5, Sadlygrove tries to warn Yugo, Amalia and Evangelyne of the dangers of the Dragon-Pig's lair, as he's the only one with experience in Dungeon Crawling. They pay him no heed, used to ignoring the Idiot Hero... until the three are struck with a Forced Transformation.