Aladarius

Aladarius is the slash ship between Alador Blight and Darius Deamonne from the The Owl House fandom.

Canon
Not much is known about Alador and Darius' relationship, aside from the fact that the two have known each other since they were students of the Abomination track at Hexside. They appeared to be good friends during the flashback events of "Them's the Breaks, Kid." Even though an old photo showcasing a young Darius booing Alador after he wins Bonesborough Brawl in the background, and the Penstagram post of Alador destroying a book Darius had written, strongly indicates that the two might be rivals of sorts. What might had caused that bitter rivalry that broke their childhood friendship is yet to be revealed.

Fanon
After the two were revealed to be childhood friends turned bitter rivals, it inspired fans to ship them. When "Clouds on the Horizon" had Alador cut ties with Odalia, it gave Aladarius fans hope that the ship might become canon. Should the two male witches survive the draining spell and put their rivalry aside in order to survive or fight up against the chaos of the Collector. With Owl House being supporters of the LGBTQ+ community, from how the series has more than one LGBTQ+ couple than just Luz x Amity. Making the chances of Aladarius being moved from fanon to canon plausible.

There are theories that Odalia might be the reason for their rivalry. Even though Darius grew up to be a Coven Head, she most likely needed Alador's skills and mind for their business, making him useful to her. Since Odalia is unable to use Abomination magic and probably never learned how to so, from how young witches were required to only learn the magic of the track they have picked for themselves. There is also the fact that some people are drawn to rivalries, while another group use high profile rivalries to their advantage. Odalia being a business woman subjects that she might have used her husband's rivalry with the Abomination Coven Head to help drum up their Abomination related business. There is also the possibility that Odalia might have made the two men enemies, so she could have Alador all to herself without having to worry of Darius getting in her way.