Jeane is the main antagonist of the original "No More Heroes". Though she wasn't Mentioned until the very end of the game, it has been revealed that she's Travis's half-sister. Which is awkward considering Travis had a crush on her when they were young and he didn't know until she told him.
She hates Travis and his family for being stuck with their paternal father who sexually molested her after causing her mother to commit suicide. She resorted to "Special means" to fund her training in an attempt to seek revenge. She then proceeds to kill Travis's parents and destroy his home
Years later, she kills Dark Star (The Highest Ranked Assassin) in front of Travis with a single blow from behind (and she did this by literally punching off the Dark Star's Crotch). After a brief talk, the two proceed to fight.
Powers and Stats
Name: Jeane (Surname Unknown)
Origin: No More Heroes
Classification: Travis's Half Sister, MMA fighter, Assassin
Powers and Abilities: Superhuman strength, speed, durability, and reflexes, Expert in mixed martial arts
Attack Potency: Multi-City Block level (Almost killed Travis if Shinobu hadn't stepped in to save him)
Speed: Hypersonic+ with Massively Hypersonic+reactions (Can Keep up with Travis)
Lifting Strength: Possibly Above Average Human
Striking Strength: Multi-City Block Class
Durability: Multi-City Block level (Can survive most of Travis's Attacks)
Range: Standard melee range
Standard Equipment: None notable
Weaknesses: None Notable