Unlike regular protagonists with many developments throughout the eight seasons, some minor character arcs in Game of Thrones are temporary and less explored. Still, their stories are able to fuel the narrative and serve a bigger purpose. Meera and Osha are both Bran Stark's protectors after he escapes Winterfell, for example.
Source：https://www.cbr.com/game-of-thrones-short-lived-characters-kahl-drogo/
