"Sume-Omikami" (皇大御神) is an epithet for the goddess Amaterasu meaning "Imperial Great Goddess," referencing how the emperors of Japan were traditionally held to be descendents of Amaterasu.
Sume-Omikami in Persona Q2: New Cinema Labyrinth (unused)
Trivia[]
The "outer" metal decorations on Sumeo-Okami's wrists are in heptagram (7-sided star) shape instead of octagram as seen in her previous incarnation. The heptagram has many symbolic meanings. The most relevant is the seven hues of rainbow which compose the visible light.
Sumeo-Okami's 3D model does not reproduce this detail faithfully. The outer metal decorations are in octagram shape instead.
Despite being localized as "Sumeo-Okami," Yukiko's English voice actress calls out the original Japanese name "Sume-Oomikami" when exploiting the enemy's weakness in battle.
This is the second instance of a Persona's name being pronounced "correctly" by the same English voice actress, Amanda Winn-Lee. The first occurrence is with Astria (Asteria).