Gavi

Hi all, First post! I just finished Oathbringer, and recently reread The Bands of Mourning, and I had a crazy thought. Could the entity posing as "Trell" be the 10th unmade? Maybe the Rosharans don't know about the 10th Unmade because it is not on Roshar? It is described as a red mist circling Scadrial. People it controls have glowing red eyes, very similar to the effect of the Thrill towards the end of Oathbringer. We know there is traffic from Scadrial through Shadesmar (I picked up on the canned food that Shallan et al. were eating). Thanks for listening to my theory!