The Queen (AKA Vader Eloha) is considered the primary antagonist of the OFF game, although by and large she is far from "evil". It is believed she is the past lover of the Batter and possibly still is, although they fight due to their conflict of beliefs. She is the only other character to maintain the usage of Add-Ons.
Powers and Abilities
Tier: At least 4-B, probably 4-A, possibly higher
Name: The Queen, Vader Eloha
Powers and Abilities: Reality Warping, Superhuman Physical Characteristics, Interaction with Abstract/Incorporeal beings, Energy Manipulation, Magic, Flight, Sound Manipulation, Creation, Soul Manipulation (Can control the Spectres), Resistance to Soul Manipulation and Mind Manipulation (She lacks a soul and is rather a creation of Hugo, similar to the Batter), Conceptual Manipulation, Light Manipulation, Illusion Creation (Appearance changes based on how the individual seeing her views her), Healing
Attack Potency: At least Solar System level, probably Multi-Solar System level (Created The Room, a dimension in which no actual logic applies and holds all of the zones created by the guardians), possibly higher (It is unknown where her power actually ends)
Lifting Strength: Unknown
Striking Strength: Probably Class XPJ (Capable of harming the Batter extensively)
Durability: At least Large Solar System level, possibly higher (Capable of tanking tons of hits from The Batter and his add-ons)
Stamina: At least Superhuman (Capable of enduring extended combat with The Batter)
Range: Up to hundreds of meters with competences/magic, trans-planetary with reality warping
Standard Equipment: Her Add-Ons, Sigma, Ipsilon, and Delta; unlike the Batter's, they focus primarily on buffs and healing
Intelligence: Likely similar to The Batter's intelligence; gifted to genius level, possibly far higher
Weaknesses: Add-Ons do not fight for her, she would rather keep peace than fight (although will fight if it comes to it)
All of her attacks can be found here. Please note that, unlike the Batter, it is apparent that she has an endless supply of magic/CP points.