Most Celestial-descendants (Aasimar) are nearly indistinguishable from humans, though they have traits that stand out depending on their lineage. Almost all of them are uncommonly beautiful and are taller than the average person.
Perhaps the most notable attribute of these Aasimars are the marks on their backs, all of them have it. Some marks may look like a birthmark, some have more defined textures like that of a reptile, in some cases the mark manifests as finely crystalized skin.