Gremica commands a faction dedicated to reviving the lost Sumer Empire. Distantly related to Neeba and Jil, she once mentored Neeba. Her driving goal is to ascend the Tower of Druaga and capture Ki, believing Ki essential for Sumer's restoration. During the ascent, she confronts Neeba after he betrays her faction and steals the vital Arrows of the Void artifacts needed to defeat Druaga. She briefly proposes an alliance with Jil and his companions against Neeba and the Succubus, who also seek the Tower's control, but soon abandons this to pursue Neeba alone. Forced to retreat after Neeba seizes the Tower, she later informs Jil in Meskia that Neeba operates from the Shrine of Iron before departing to confront him there. Gremica dies fighting Neeba at the Shrine.

As an Archer, she wields a magical bow. Her loyal attendant and magical supporter, Acra, crafts her specialized arrows and serves as a significant emotional anchor, accompanying her throughout the ascent. Gremica exhibits exceptional archery skill and unwavering determination to revive Sumer, willing to take extreme measures. Her attire shows significant damage during the final battle with Neeba.