After the synchronicity between Catina Da Sá in Howling Dark, and the new character Shoya Nantakee in Reaching Out. I'll try creating a new character who had only been hinted at in Howling Dark, when it resumes, and this character may only be mentioned in a conversation or two.
Baya 'Nantak. "The Big Monster" as Catina might nickname her.
A youngling that Catina met on Sangheilios during her UNSC days. After numerous attempts to pronounce "catch een uh", Baya threw her hands in the air and did her best attempt at a battle cry. Then when asked if it'd be easier to give Catina a name, Baya clicked her mandibles, and called Catina "Shoya".
Catina might tell this story to Nos, Hal Maree, possibly even Rhak Leree himself..having no clue that Shoya 'Nantak was known to all three of them in Reaching Out.