Kromelle

Kromelle is the femslash ship between Krolia and Romelle from the Voltron: Legendary Defender fandom.

Canon
Krolia met Romelle when she, Keith and Cosmo came across the Altean colony, while searching for the unique kind of Quintessence, where Romelle told them what had happened to her brother, and many other Alteans, after the trio explained their mission to her. Even thuogh it was Krolia and a half of Keith's race, the Galra, that destroyed Planet Altea and had forced many Alteans into hiding from the rest of the universe, Romelle choice to trust them. A choice that allowed her to uncover the truth and to be one of the first Alteans to leave the safety of the colony, so Krolia's son could bring all four of them to Castle of Lions and expose Lotor's crimes.

When the Castle of Lion was damaged in an attack by Lotor's generals, Krolia and Romelle stayed behind on the castle-ship where they helped Coran with its repairs.

Fanon
People shipping Krolia with Romelle might simply be due to Krolia being one of the first outsiders she'd met, that aren't Lotor or his Galra doctor soldiers, as well as Krolia, Keith and Cosmo being the ones that helped Romelle expose Lotor for his crimes to the people that have helped her to prevent other Alteans being harmed by the Galra-Altean prince, like her brother. As well as the fact that Romelle and Krolia had stood closely to each while during the Voltron Lions roaring to mark the real Shiro's return.

Fandom
TUMBLR