WARNING: The following contains spoilers for What If...? Season 1, Episode 7, "What If... Thor Were an Only Child?," streaming now on Disney+.
Marvel's What If...? Episode 7 brings Thor, Sif and the Warriors Three to Earth to throw a massive party while Odin is in the Odinsleep and Frigga is away. Thanks to Thor's party-animal tendencies in this timeline, his guest list includes revelers from across the galaxy, among them several recognizable Marvel Cinematic Universe figures. No matter how noble or evil they may have been in their MCU debuts, each puts aside their differences to enjoy the Party Prince's Earth-wide rager.
Several MCU stalwarts, like Jane Foster, Darcy Lewis, Captain Marvel, Maria Hill, Nick Fury, Frigga and Loki (in Frost Giant form), play more central roles in "What If... Thor Were an Only Child?," plenty of others are on the guest list for the episode's nearly planet-destroying party. Here they are.
The Ravagers Return to Earth for Thor's Party
Due to their reputation as unruly intergalactic scoundrels, it's only natural that the Ravagers are invited to Thor's party. Yondu, Kraglin and various members of the group appear throughout the episode drinking, dancing and performing whatever other acts of debauchery their hearts desire. Toward the episode's end, they ultimately end up doing the right thing and help Thor clean up the planet along with everyone else.
Skurge Is Welcomed by Thor to His What If Rager
One of Thor: Ragnarok's standout characters, Skurge the Executioner arrives at the party and receives a personal welcome from Thor. The God of Thunder provides Skurge with a mug, informing him that he can drink as much as he wants because it will just refill itself. Unlike the main MCU, where Skurge is initially a fairly low-level Asgardian who slips under the radar until Hela's takeover, this incarnation of the character seems to be friends with Thor, as he is greeted with a "Thunder Hug" upon his arrival.
Howard the Duck & Darcy Lewis Get Hitched, Vegas-Style
The Marvel Universe's resident anthropomorphic duck has a short but memorable appearance in Episode 7 of What If...?. Howard initially appears as the punchline to a joke made by Darcy Lewis, to which he gives a snippy retort about Darcy's hair color. Despite this, the two get nachos together and their relationship blossoms, with them being married by an Elvis impersonator. Unfortunately, their relationship has soured by the next morning. Darcy brushes Howard off when he attempts to confront her. This episode marks Howard's second What If...? appearance, with him having also appeared as part of the Collector's museum in Episode 2.
Skrulls Amuse Thor by Shape-Shifting Into the Thunder God
The Skrulls first appear toward the beginning of the episode when Thor welcomes them to the party and has them all shape-shift into him. Similar to the Ravagers, they continue to show up throughout the episode, usually appearing in the background of various crowd shots. Despite their shared history, the Skrulls don't end up interacting with Captain Marvel when she arrives to break up the party.
The Grandmaster and Topaz Know How to Party - on Any Planet
The galaxy's most notorious hedonist, the Grandmaster, turns up at the party alongside his personal bodyguard Topaz. The two are initially glimpsed chowing down on some cake, and the Grandmaster ends up playing music for the party, once again showing off the DJ skills he first demonstrated in Thor: Ragnarok. Lastly, the two portal away with two scooters after Thor tells everyone that the party is over, rendering them as some of the only partiers to escape having to help clean up the mess they've made.
Ayesha and the Sovereign Follow Thor's Party to Paris
Despite being depicted as a haughty and uptight species, Guardians of the Galaxy Vol. 2's Sovereign appear at Thor's party. Here, the Sovereign are a bit more laid-back and willing to have fun, and their leader Ayesha takes a selfie with Thor, a female Ravager and one other Sovereign on the second night of the party. They stay on the planet and later appear on the bridge in Australia toward the episode's end and presumably are enlisted to help clean up the big mess.
Surtur Takes a Break From Ragnarok to Flirt With Lady Liberty
Surtur's party arrival proves that even planet-destroying fire demons need to unwind sometimes. Due to his immense size and power, Surtur ends up causing mayhem everywhere he goes, first burning off the Statue of Liberty's arm and then cutting off electricity to a large area while attempting to limbo under some power lines. Fortunately, he is able to reattach the statue's arm using his heat while Thor re-powers the blacked-out area.
Guardians of the Galaxy: Yondu, Drax, Rocket, Mantis & Nebula
Throughout the episode, several members of the Guardians of the Galaxy attend Thor's party. Nebula gambles with the intent of buying a new eye and later attempts to get out of cleaning up by claiming that Thanos is calling her. Rocket Raccoon passes out in a sink in Jane Foster's hotel room, and Drax drinks so much he throws up next to Thor. Yondu (as previously mentioned) and Mantis are also seen among the crowd in various shots.
Korg, Joined by the Sakaaran Warriors, Puts Fury Out of Commission
Rounding out the party's lineup are various Sakaaran warriors who first appeared in Thor: Ragnarok. Valkyrie appears early in the episode, having a drink with Lady Sif and Drax, while fan-favorite character Korg accidentally bowls over Nick Fury in his rush to cannonball into a pool. Korg returns on the bridge toward the end of the episode, this time accompanied by Miek. The Kronan sucks on a pacifier while partying, but it ends up falling out of his mouth when Captain Marvel flies Thor away to Siberia to confront him. In addition to these characters, several other minor warriors are glimpsed among the crowd, including the spiky-helmeted Roscoe (who Thanos kills at the beginning of Infinity War) and the hooded Biff.
To see the various members of Thor's intergalactic guest list, the latest episode of What If...? is streaming now on Disney+.