Sidlink

Sidlink is the slash ship between Link and Sidon from The Legend of Zelda fandom.

Breath of the Wild
A hundred years before the events of the game begin, Sidon states that while he still remembers his older sister, he does not recall ever meeting with Link due to limited interactions with him.

When Link travels to Zora's Domain, Sidon meets him from the top of the tower and introduces himself as the crown prince of the Zora and when he sees that he is a Hylian, he invites him to Zora's Domain due to a terrible situation happening there. Due to the endless rains caused by the corrupted Divine Beast Vah Ruta, Link is unable to climb any of the steep slopes since he will slip constantly, so he is forced to take the long path while fighting or avoiding electric enemies along the way. During Link's travels, Sidon frequently calls out to Link to cheer and encourage him during his long travels to Zora's Domain. Alternatively, if Link enters Zora's Domain in another way without encountering Sidon, the Zora prince will initially tell him that his father is busy, and he must leave before realizing that he is a Hylian and apologizes for his rudeness. Once Link arrives in any of the routes, he meets with his father to hear more of the situation regarding Vah Ruta, who is causing so much turmoil through its heavy rains that threaten to break the Rutela Dam at East Reservoir Lake and flood all of Hyrule. Muzu, however, is against Link helping out due to his prejudice against his race and is quick to protest and talk down to him through blaming him for Mipha's death, which often has Sidon silencing him. When Link is given the Zora Armor, Muzu had enough and leaves the court in a huff. Sidon then speaks with Muzu despite him trying to brush him off and Link shows up wearing the Zora Armor, which to their surprise, fits him perfectly and Sidon explains that Mipha loved Link so much, the armor was specifically made for him. After Muzu gives it some thought, he recommends taking some Shock Arrows from a Red Maned Lynel at Ploymus Rock, but is still pessimistic about the outcome due to his lack of faith. Upon gaining enough Shock Arrows, Link and Sidon team up at East Reservoir Lake where Vah Ruta rests and engage in battle with it with Sidon swimming around with Link on his back as the latter shoots its projectiles to give Sidon an opening to approach it so Link, with the Zora Armor on, can climb them and use Shock Arrows to shut down the water pumps from the orbs. When Link climbs aboard, Sidon wishes him luck. After Vah Ruta is freed and Mipha takes aim at Hyrule Castle, Sidon quickly congratulates Link with the rest of the Zora, Muzu included, for his efforts.

Age of Calamity
Sidon arrives in the past to rescue Mipha from Waterblight Ganon, if Link is the one who enters and destroys Waterblight Ganon, Sidon vocally states that he is very happy to fight alongside him once again, even though Link has never seen or met him in his adult form. His general interaction with Link is limited in this game, but he does exchange dialogue with Link during gameplay when they are fighting together in various scenarios and challenges where they are both available.

Fanon
Sidlink has shown to be very popular with the Zelda community, so much that Archive of Our Own currently has over 1,200 slash fanfics that pair them together. It takes the second-place spot just behind Zelink, showing that while the Zelink ship is an extremely popular het ship, Sidlink is the most popular slash ship in the Zelda community overall. There are also fans who are very devoted to making fan arts that ship him and Link together and they love the chemistry that the two of them have in the games. Tears of the Kingdom has a statue in the plaza of both Link riding on Sidon's back as they did when they fought Vah Ruta as the former tries to get in to resolve the crisis from within. However, along with this, there was also a division on the very existence of a particular person that Sidon was engaged, not to Link, but to Yona, which had sparked outrage among many within the Sidlink fanbase due to the very fact that Sidon was stolen away from them like that, and it killed the possibility of their ship ever being canon. Other Sidlink shippers who don't mind Yona being Sidon's fiancée and have taken the alternative to make poly ships of Link, Sidon, and Yona together and sometimes of Link, Zelda, Sidon, and Yona.