Terrabinger

Terrbinger is the non-binary ship between Terrako and Harbinger Ganon from The Legend of Zelda fandom.

Canon
During Calamity Ganon's attack, Terrako was activated after Princess Zelda unlocks her power to protect Link from the Guardians and hears her pleas for the safety of everyone around her. As Terrako prepares to travel through time, a corrupted Guardian notices it and its intentions and attempts to destroy it though Terrako barely avoided it and made it through. The malice reacts by leaving the Guardian and pursues it. Terrako arrives in the past to begin its search for Zelda and the Malice also emerged and lost track of Terrako, and headed to Zelda's Study to take control of the new timeline's inactive Terrako becoming Harbinger Ganon. As Terrako enters the coliseum, Harbinger Ganon was waiting for it and the two of them duke it out in a battle with Terrako seemingly victorious though Harbinger managed to fool and defeat it by burying it in rubble and with the satisfaction that it was down, Harbinger Ganon leaves to cause havoc on all of Hyrule. Months later, Terrako was reactivated once Impa throws it to Link while trying to escape the Bokoblins and it brings up the Sheikah Towers, to everyone's surprise. As Terrako and its buddies journeyed through the Breach of Demise to consult Purah and Robbie on Terrako's presence and mysterious powers, Harbinger Ganon would possess an inactive Guardian and has it attack everyone, though with Terrako's assistance with activating inactive Guardians to counter the corrupted one allowing them to defeat it as Terrako would share important information with what will happen in the future. Harbinger Ganon would also run into Astor, who willingly assists it to help prevent the heroes from changing the future of Hyrule.

Terrako has interacted with the Champions in a few ways, with Mipha noting how cute it is, Harbinger Ganon would lead monster attacks against their homelands wherever it went from behind the scenes, but it made itself known when it led monster attacks against Rito Village while making itself known essentially framed Terrako for its doing and resulted in Revali and the Rito attacking Link and Impa and would have ended violently had Zelda not stepped in to end their fight. After that, Terrako and Harbinger Ganon do not interact with each other further as Harbinger remains in the Yiga Hideout to provide information to Astor and the Yiga Clan and to keep the latter in line while Terrako actively helps the Hyrulean forces with activating Sheikah technology to counter powerful enemies. During a DLC mission, Terrako and Harbinger Ganon meet again at another coliseum where the latter easily overpowers Terrako and buried it in rubble again, though this does not go unnoticed as Purah as she instructs everyone to gather the energy boosts for the inactive Terrako and had to fend off Astor and the monsters as they go. Once Terrako is reactivated, it managed to be much stronger than Harbinger Ganon and it managed to defeat it and sends it flying where it lands on the cushion that the Yiga Clan are carrying. As Terrako intimidates them, the Yiga Clan flees rather than fights much to its disappointment as Link and Zelda catch up.

After Calamity Ganon arose and tried to take control of the Divine Beasts, Terrako acts by sending four Gates of Time to summon four warriors to rescue the Champions from the Blight Ganons and has proceeded to save Akkala Citadel and Fort Hateno from enemy forces. As they battle at Hyrule Castle and defeat Harbinger Ganon and Astor, whom the latter breaks down as it orders Harbinger to destroy the Hyrulean forces but is instead consumed by Harbinger's Malice and spitefully takes control of Terrako to turn it against Link and Zelda forcing them to fight it. Later, despite being damaged, Zelda's power allows Terrako to get back up and sacrifice itself to destroy Calamity Ganon's invincibility allowing them to destroy Calamity Ganon forever. While Harbinger Ganon never returned, Terrako was reconstructed by the grateful heroes.

Fanon
In the base game if the DLC is not installed, fans have noticed that they are both counterparts and are disappointed that they barely interact with each other despite this fact. Regardless, there has only been a few fan art of the two of them on a few occasions. However, once the DLC came out, fans are delighted to see that both of them are actually engaging in battles as they both are fighting to determine the future of Hyrule, with Harbinger Ganon wanting to keep the dark future unchanged while Terrako fights to ensure a bright future ahead for everyone's sake.