PaluPit

PaluPit is the friendship between Pit and Palutena from the Kid Icarus fandom.

The original game
Pit starts his journey by collecting the Three Sacred Treasures to save his home of Angel Land and rescue goddess Palutena from the clutches of Medusa.

Kid Icarus: Of Myths and Monsters
The game starts with Palutena having a vision of the demon Orcos invading Angel Land, so she summons Pit to collect the Three Sacred Treasures and defeat him. Orcos turns Palutena to stone at one point, but Pit manages to save her. He then receives a kiss from Palutena transforming him into a "real man" and flies too close to the sun, burning his wings and leaving his fate unknown.

Super Smash Bros. Brawl
Palutena has a brief but notable cameo in the Subspace Emissary, where she commands Pit to save the other fighters.

Kid Icarus: Uprising
The game takes place 25 years after the original game, ignoring the events in Of Myths and Monsters. Somehow, Medusa was resurrected and is hellbent on revenge against Pit, Palutena and the rest of Angel Land, so Palutena summons Pit to put an end to her evil plan. After managing to defeat all of Medusa's forces (Twinbellows, Hewdraw, Thanatos and Pandora) which incidentally led to the creation of Dark Pit, Pit obtains the Three Sacred Treasures with Palutena always talking to him with her telepathy and feels ready to face off against Medusa. To the surprise of both Pit and Palutena, Medusa is defeated rather quickly, but Pit and Palutena genuinely believe that the peace is restored for good and celebrate... which is then interrupted by the arrival of Hades, the true ruler of the Underworld.

Palutena then commands Pit to try and put an end to Hades' reign of terror, only to find out that Hades is causing pointless wars and is relishing in the bloodshed. This in turn annoys the goddess of Nature, Viridi, who tries to wipe out humanity with "Reset Bombs", putting the Earth in an unhabitable state. This in turn alerts the Aurum, an alien species trying to harvest the Earth's resources. In the middle of all of this, all three gods realize that the Aurum are bigger threat, so Pit and Palutena reluctantly team up with Viridi and Hades to defeat them. However, after managing to defeat the Aurum, Pit starts falling unconcious, with Palutena giving a worried cry.

Shortly afterwards, Pit regains conciousness and sees himself unable to move, only to realize that his soul is trapped in a ring. Finding out that he can hijack a person holding the ring, he finds out through his friend Magnus that 3 years have passed since the Aurum invasion, during that time, Palutena supposedly gave up on humanity and openly tries to wipe it out herself. Pit refuses to believe it, until he sees his soulless body attacking humans under Palutena's command. After Magnus defeats Pit's body and reunites it with his soul, Pit confronts Palutena and finds her unlike herself. Surprisingly, Viridi answers his calls instead and brings him to her domain, Pit found himself unable to reach Palutena due to a forcefield around her domain.

Viridi tells Pit that he needs the Lightning Chariot to have any chance of breaking through the forcefield, after defeating the Chariot Master for it, Pit manages to break through and confronts Palutena in person. Viridi then tells Pit that Palutena is possessed by the Chaos Kin, an evil creature that Pit and Palutena accidentally freed by destroying Viridi's moonbase. Making sure to only attack the Chaos Kin and not Palutena (managing to kill Palutena will result in a game over), Pit manages to free her from its control. However, the Chaos Kin returns and snatches Palutena's soul away, turning the poor goddess to stone. With the help of Dark Pit, Pit manages to infiltrate the Chaos Kin's realm and defeat it, restoring Palutena's soul. However, since the remains of the Chaos Kin attacked Dark Pit, Pit sacrifices his wings in order to save his duplicate and the pain of having his wings scorched causes Pit to fall into a coma. Palutena cradles Pit's body, sorrowfully remembering the times where he wished he could fly without Palutena's help.

Palutena then commands Dark Pit to bring Pit's body to the Underworld in a hidden location called the "Rewind Spring", a fountain that can heal any wound and ailment by turning back time. After Pit's wings were restored, Pit and Palutena prepare for the final fight against Hades, with Pit equipping the Three Sacred Treasures. However, Hades destroys those with no effort, leading to Palutena sending Pit to Dyntos, the god of the forge to create a new set. Dyntos tests Pit's might by having him fight his allies, including Palutena. Pit does not feel like fighting her after being forced to fight her not too long ago. Lucky for Pit, that wasn't the real Palutena, the real one was under a sleeping spell by Dyntos.

After finally managing to defeat Hades, Pit and Dark Pit celebrate, only for Viridi to point out that she still isn't quite over her hatred of humanity. Palutena tells Viridi to back off and let Pit enjoy his victory for the time being.

Palutena's Revolting Dinner (promo short)
Palutena tries to cook for Pit and his forces by using an elixier to make the food "livelier". Unfortunately, an overdosis causes a carrot to begin to move around by itself, quickly overwhelming Palutena with her being forced to fight it while sending Pit off to get more food and telling him that everything is fine telepathically. However, just as Pit returns from his shopping, he sees a giant explosion at Palutena's temple and she is forced to admit that she can't deal with the vegetables alone and lets Pit and his men fight for her. However, just as Palutena thinks she can relax for a bit, another carrot attacks her and this all culminates in Palutena getting her head stuck in a giant vegetable. When Pit checks on her worriedly, Palutena just tells him that they should go out for dinner.

Super Smash Bros. for Wii U and 3DS
The announcement trailer for Palutena has her watching a fight between Pit and Link, admitting that Link is quite impressive "for a mere mortal". She then interferes, Pit is confused, but Palutena tells him that she isn't here to save him, giving him the power of flight to toss him aside. She's here for "divine intervention". Pit is astonished that Palutena wants to fight as well, worried if she got what it takes. Palutena reminds him that they fought each other before, but Pit tells her that she was possessed by Chaos and tells her that he was worried sick, which Palutena coos over.

Pit can telepathically communicate with Palutena by doing a certain button combination on a certain stage. "Palutena's Guidance" officially replaces Snake's Codex conversations from Brawl.

Moments

 * In Smash Bros., should Palutena manage to beat Pit in a fight, she will sometimes give a playful "So sorry about that Pit"

Fanon
PaluPit is a very popular, though not uncontroversial ship in the Kid Icarus fandom, being the second-most popular ship on AO3, the second-most popular ship for Pit and the most popular ship for Palutena.

The controversy comes from people seeing Palutena as more of a mother figure for Pit and are thus grossed out by the idea of them being romantically involved. It should be noted that the Super Smash Bros. fanbase tends to prefer the romantic version of the ship, largely because, not having played the game, they have a very different idea of what exactly their relationship is. A common theme is to make Palutena more dominant and controlling and making Pit more subserviant, which is a far cry from the more wholesome and funny interactions they have in Uprising.

Speaking of Uprising, it is often considered the game that brought the two of them shipping attention, as many found the "classic" incarnations of Pit and Palutena to be fairly standard characters, people mainly shipped them in Brawl because they were intrigued by Palutena's cameo.

Fandom
FAN FICTION

Trivia

 * Palutena is the only non-playable character in Brawl to appear in the Subspace Emissary. The next game would make her playable.
 * Pit almost always refers to Palutena as "Lady Palutena".