Eltnum is a mysterious being. She refers to the other residents of the Hollow Night as "rookies". She also wears a completely new uniform, and oddly in comparison to the original Sion, she seems to be a bit shorter.
Originally known as Sion Eltnam Altasia (シオン=エルトナム=アトラシア), who first appeared in the Melty Blood franchise.
Compatible with all Baomaru types, + ahegao states