Jack-O' Valentine (or just Jack-O' for short), is a character in the Guilty Gear series. She's one of the three Servants of That Man alongside Raven and I-No.
Because her awakening remains incomplete, she can't function without her mask and toffee. Her past is shrouded in mystery, and her own memories are vague. Because she's in an unstable state, the tone of her voice changes rapidly.
Powers and Stats
Tier: At least 5-C, likely High 4-C
Name: Jack-O Valentine
Origin: Guilty Gear
Age: Unknown, but very young as she was only recently created by That Man
Powers and Abilities: Superhuman Physical Characteristics, Forcefield Creation, Energy Projection, Flight, can summon various minions, some of them can fly and they all have monstrous strength and speed, can trap a target inside her pumpkin ball and chain, massive resistance to mental and spiritual attacks (Actively resides in the Backyard)
Lifting Strength: Superhuman+, exact level unknown
Striking Strength: At least Moon Class+, likely Large Star Class
Durability: At least Moon level+, likely Large Star level
Stamina: Should be pretty large given Guilty Gear standards
Range: Thousands of kilometers
Standard Equipment: Her mask, ball, and chain
Weaknesses: She can't fight properly without her mask and toffee, due to being in an unstable state.