An Orion who was once involved with D'Erika Tendi and becomes the chief suspect when she vanishes before her wedding in the Lower Decks episode Something Borrowed, Something Green.
Nya'al appears in the fourth-season Lower Decks episode Something Borrowed, Something Green, the first to visit the Orion homeworld. D'Vana Tendi is summoned home for the wedding of her sister D'Erika, only to be told that the bride has been abducted and that she, as the family's trained operative, is expected to bring her back before the ceremony.
With Beckett Mariner and T'Lyn in tow, Tendi works her way through the city's underworld. Suspicion falls first on Nya'al, a former lover of D'Erika's with an obvious grudge. When they catch up, Nya'al turns out to have had nothing to do with it, but mentions that D'Erika has been seen at a ship graveyard.
The lead takes Tendi to her sister, who had run off of her own accord and resents D'Vana for having left the family for Starfleet. The two fight, make peace and get back in time for the wedding.