The dance scene during the Halloween party is a parody of the dance scene in A Charlie Brown Christmas right down to Kang and Kodos in a non-speaking cameo as the twins 3 and 4.

Upon arriving, however, Kirk discovers that the synthetic food discovery claim was just a ruse employed by Dr. Leighton to bring Kirk to Planet Q. Leighton reveals to Kirk his true motivation is for Kirk to confirm Leighton's suspicions that Anton Karidian ( Arnold Moss ), the leader of a Shakespearean acting troupe currently on the planet, is, in fact, Kodos " the Executioner ," the former governor of the earth colony of Tarsus IV, who was responsible for the massacre of over 4000 people — including members of both Kirk's and Leighton's families — 20 years before.

He states he is satisfied with the official version of history that Kodos died in the aftermath of a battle between his loyalists and relief forces from Earth and that a burnt body discovered in the wreckage was that of Kodos.

Kirk confesses that he is unsure if Karidian is Kodos and he is unwilling to make such an accusation without proof.

However, after Riley is poisoned and left in a coma, and the ship is almost damaged by a phaser on overload left in Kirk's quarters, Kirk decides to confront Karidian by having him read the sentence Kodos pronounced before each execution so that he can compare Karidian's voice print with that of Kodos stored in the computer.

Meanwhile, Lt. Riley, recovering in sickbay, overhears Dr. McCoy's log entry and learns that Karidian is suspected of being Kodos — the man responsible for killing Riley's family.

Bart is sad about the loss of his parents and younger siblings, but Kang and Kodos adopt him.

Wiggum attempts to escape in a hot-air balloon, which is destroyed by a large steampunk-style flying saucer flown by Kang and Kodos, who comment on destroying the Earth's air force.

* The recording from Springfield Museum mentions Rigel VII as a planet, although it is merely a fictional planet originally from the Star Trek universe, and the apparent home of Kang and Kodos from The Simpsons.

Kodos is the name of more than one fictional character:

The episode is presented in a similar format to the previous season's " Treehouse of Horror " and contains several similarities to the previous episode, such as Marge's opening warning, the tombstones in the opening credits and the appearance of the alien characters Kang and Kodos.

The aliens Kang and Kodos realize the human race is " ripe for the plucking " and, armed only with a slingshot and a club, enslave the Earth.

Ned's first wish is to " Get rid of those awful aliens ," which is accomplished when Moe chases after Kodos with a board with a nail sticking out of it, then brings them back to the flying saucer, discussing the consequence of the monkey paw to evidently " cause the human race to create a board with a nail in it so big, to doom mankind ".

The episode is presented in a similar format to the previous season's " Treehouse of Horror ", and contains several similarities to the previous episode, such as Marge's opening warning, the tombstones in the opening credits and the appearance of the alien characters Kang and Kodos.

While fishing, Homer is abducted by the aliens Kang and Kodos.

In one scene, Marge is abducted by Kang and Kodos, who lasso her then pull her into the ship.

When several of the citizens take matters into their own hands, they discover that two aliens Kang and Kodos are filming a reality television series about the populace.

In the second story, " Hungry are the Damned ", the Simpsons are in their backyard having a barbecue when they are abducted by extraterrestrial life forms ( specifically Kang and Kodos ).

Kang and Kodos take on their forms to ensure that one of them will become the next leader.

Although Kang and Kodos make brief appearances in every Treehouse of Horror episode, their brief appearance in this one was nearly cut.

The entire Treehouse of Horror XIII episode concludes with an appearance by Kang and Kodos, observing that Dr. Hibbert ’ s skull-shaped island resembles their alien number 4.

From their spaceship, Kang and Kodos criticize the Simpson family for airing a Halloween special in November, as they are already set for Christmas.

Maggie turns them all, including Dennis Rodman, Kang, and Kodos, into pacifiers with their normal heads for no apparent reason other than her obsession for pacifiers, and flies off on a broom to the theme tune of Bewitched.

The boss gives the meal a delicious rating, but ends up liberating Bart, and gives Kang and Kodos a hyper-galactic promotion, much to the aliens ' delight.

Although born on Earth, Kirk for a time lived on Tarsus IV, where he was one of nine surviving witnesses to the massacre of 4, 000 colonists by Kodos the Executioner.

The aliens are using the cola to make people insane, by which time Kang and Kodos will distribute laser guns among the populace to drive the town to a violent massacre sure to draw many viewers.

In the second segment, Kang and Kodos are introduced when the Simpsons are abducted by aliens.

Kang was a Klingon captain portrayed by actor Michael Ansara in the episode " Day of the Dove ", whereas Kodos the Executioner was a human villain from " The Conscience of the King ".

After doing some investigation on the ship's computer, he discovers that former Governor Kodos had ordered the executions of more than half Tarsus IV's population after the food supply was all but destroyed by a fungus.

* Kodos, a fictional green one-eyed alien of in The Simpsons, voiced by Dan Castellaneta.

In the episode, Homer Simpson is honored by the townspeople at a Friars ' Club Roast, until it is interrupted by Kang and Kodos.

Soon, Kang and Kodos arrive at the roast and declare that humans are stupid, as demonstrated by more clips.

Bart then goes to his father, Homer, for help, and the duo quickly pursue Kang and Kodos to the brewery.

Kang and Kodos demand that the Simpsons give Maggie to them, and Kang and Homer start to fight over Maggie until Bart stops them and tells them there's only one place where something this bizarre can be resolved: The Jerry Springer Show, where Kang gives Marge a bouquet of flowers and Homer attacks him.

They are Homer, Bart, Lisa, Marge, Barney, Krusty, Apu, Groundskeeper Willie, Bumblebee Man, Moe, Ned Flanders, Professor Frink, Mr. Burns and Waylon Smithers, Kang and Kodos, Itchy, and Scratchy, some of which must be unlocked.

* Rigel IV — The home planet of drooling aliens Kang and Kodos on the animated comedy The Simpsons.

They eavesdrop on a conversation between aliens Kang and Kodos, who are masterminding a scheme.

The sibling aliens Kang and Kodos first appeared on the show on this episode.

The computer research also reveals that there are no records of Karidian's existence prior to Kodos ' death ; that there were nine known people left after the massacres who could identify Kodos, were he still alive ; that, in the intervening years, seven of these had died, all under mysterious circumstances ; that in each case of the deaths of the former witnesses, Karidian's acting troupe has been somewhere nearby ; and that the final two surviving witnesses — Captain Kirk and Lt. Kevin Riley ( Bruce Hyde )— are both on board the Enterprise.

The characters Kang and Kodos later take on Peabody's and Sherman's appearances due to Homer's meddling with the timestream.

Kang and Kodos take on the form of Bill Clinton and Bob Dole.

Just as they announce destruction of the Earth, Maggie's mind reveals more clips that show Kang and Kodos something on Earth that makes it worth sparing: celebrities.

It has been suggested on The Simpsons season 3 DVD commentary for the episode " Treehouse of Horror II " that the appearance of Kang and Kodos was based on cover art from EC Comics.