Ass Pull: The final episode can come off as this. After building up to a dramatic showdown with Dark Surfer, he's defeated and then shown to be Disc-One Final Boss. The heroes find Dr. Doom, having claimed the Infinity Sword/Stones, and the Squad fight him...only for the stones to shatter and conveniently restore everything to normal.
Awesome Music: The show itself is a definitely divisive with fans, but most can agree that the theme song is excellent.
Big-Lipped Alligator Moment: Pretty regularly. For instance, when Dr Strange was reading everyone's minds, Thor is wondering if his tights make his thighs look big.
Ear Worm: Who'll save the day? Super Hero Squad! Even if naysayers hate the show, they can't deny that the opening theme is catchy. It helps that the composer of the song is Perry Gripp, of Nerf Herder fame.
Plus it sounds a bit like an Offspring song, complete with the singer sounding like Dexter Holland in the verses.
Foe Yay: Enchantress and Thor, though completely one-sided.
Fridge Brilliance: At one point, most of the squad has to either serve jail time or pay an enormous fine. Everyone is shown in jail, except for Iron Man who, as one of the richest men in the Marvel universe, could pay his fine with ease.
Travis Willingham voices the Incredible Hulk in this series and a few years later would take over the role of The Mighty Thor, much like Rick D. Wasserman (who went from voicing the Hulk in the animated adaptation of Planet Hulk to voicing Thor on Avengers: Earth's Mightiest Heroes). It's a good thing his voice is big enough for both characters.
Captain America is Demoted to Extra, while Falcon was made into a series regular. In a post-Avengers world, fat chance of something like that happening again.
Although the ending of Endgame and news of Falcon and Winter Solider getting a show of their own seems to have made this a possibility.
The season 2 opening shows Thor and Hulk during the line "While they may not get along but they're always fighting strong now". Then comes the release of Thor: Ragnarok several years later and that film is the embodiment of these lyrics.
The season 2 theme has the lyrics "Even Thanos ends in tears, when Iron Man joins the fight". Indeed, it is Iron Man who brings about Thanos' doom in Avengers: Endgame.
One of the Hulk transformation Couch Gags had the Hulk change so that he was drawn in the style of The Simpsons, a Fox property. It's more hilarious in light of Disney acquiring most of Fox's assets on March 20, 2019.
Likewise, Thanos and the Infinity Gauntlet being an arc of the show soon enough prompted jokes about how Avengers: Infinity War and Avengers: Endgame (both of which would be released about a decade after the conclusion of this show) looks great.