Sadlygrove at the sight of his master, Goultard, vanquishing Rubilax in one blow.
Amalia◊, when Grovy gets himself into a duel by defying her brother Armand.
Ruel in season 2 episode 8, after learning that Sadlygrove had seen Evangelyne naked, and not in a dream.
Jerkass Gods: The Twelve in spades. Iop's carelessness resulted in the destruction of the last world he presided over, though Goultard seems a bit better; Xelor does nothing to stop his lieutenants from abusing their powers via tormenting mortals; Sadida fathered a child with one of his Dolls and proceeded to butcher his deformed offspring; Ecaflip's kid turned out completely rotten and corrupt; Osamodas has been known to curse anyone that insults him; and Pandawa became a goddess by intoxicating people into worshipping her. It says something when the Blood Goddess (Sacrier), God of Greed (Enutrof), and God of Thieves are the least malevolent and destructive of a pantheon.
Jerkass Has a Point: Many of the points the Prince of BrÔkmar makes during the Council of the Twelve, as the Eliacube and the Eliatropes are in fact quite dangerous and have destroyed entire worlds before.
Juggle Fu: Grougaloragran with Yugo's baby carriage in episode 1.
Just Eat Him: This happens twice in episode 21, with Ig˘le swallowing whole first Az and then Adama´, and being forced to regurgitate them both later. (Adama´ can even be seen pounding the beast's distended belly from the inside.) And again with Adama´ in Tofu form in episode 23 — this time, Ig˘le willingly spits him out.
Fanny Bloc [Yugo's voiceactress]: I actually practice Kendo — for those who know — and I used the famous Kiai yell when Yugo uses a portal.
Kick the Dog: Remington is pointlessly evil to Evangelyne, case in point being during season 2 episode 3 when he steals Evangelyne's Shushu and drops Sadlygrove's sword down a hole, when they had already agreed to trade. It was useless to him and Eva clearly had a reason to want it, but he just felt the need to spite her. In the same episode, he attacks her right after commending her for rescuing him. He later tries to sic Rushu's Dragon on her, because it "seemed like a good idea".
Qilby can create a Sinister Scythe made of wakfu once he's absorbed the Eliacube.
Then, Yugo gets a sword and shield of wakfu for the final fight of season 2.
Last of His Kind: Mid-season 1 we discover that Yugo is the last Eliatrope alive. Subverted in season 2 episode 6 when Grougal's Dofus hatches with his partner Eliatrope and we learn that this wasn't actually the case to begin with.
Last-Second Chance: Unusually, Nox takes his and retreats. The finality with which he delivers his parting line indicates that he does not intend to return. The credits for episode 26 demonstrate this.
Let's Fight Like Gentlemen: The Dragon-Pig and Sadlygrove. Even though the fight is technically a draw, the Dragon-Pig accepts to let Ruel go and to remove the Baleful Polymorph on Yugo, Amalia and Eva, because it was a damn good tussle.
Let's Split Up, Gang: Yugo and Adama´ decide to go their own way for some time, in episode 18. They return to the others by the end of episode 24.
Yugo, Amalia and Evangelyne wear the same clothes most of the time, with exceptions made for the plot-related changing (like the princess dresses in episode 4 or the cheerleader outfits in the Bontarian Gobbowl arc).
However, Grovy gets a whole new look in episode 22, and Ruel gets a new outfit in the last two episodes of season 1, which he keeps for season 2.
Nox bears four different looks through season 1.
Evangelyne dons a new outfit for season 2, and while Amalia continues to wear her season 1 clothes, she's briefly shown in full princess garb (including in the opening sequence).
Living on Borrowed Time: During season 1, Nox, who is over 200 years old and only alive because he harvests the wakfu of other living beings. After giving up the Eliacube and thus the ability to drain wakfu, only dust is left of him.
Loads and Loads of Races: At first glance, though in fact it is a subversion of this trope. The "races" in Dofus (and by extension Wakfu) are more along the line of classes or religions. The characters may change in appearance to match that of their gods, but all are still basically "humans" (and there are un-classed, baseline human NPCs too). Which explains why interbreeding — like with Kabrok (an Osamodas) and Miranda (an Ecaflip), or with Sadlygrove (a Iop) and Evangelyne (a CrÔ) — is perfectly possible.