Based on the provided information regarding Lie Ren in "RWBY: Ice Queendom": Lie Ren's background, development, and unique portrayal receive no concrete or direct focus within "RWBY: Ice Queendom". Available descriptions of the adaptation do not detail distinct narrative arcs, background elements, or evolution exclusive to Ren. The series centers its narrative primarily on Team RWBY, Weiss Schnee's storyline, and new characters like Shion Zaiden, without mentioning expansions or alterations to Ren's role.