Nathan Peters

Nathaniel Lucas Peters (better known as "Nathan" by his stepsons and stepdaughters) is the stepfather of the Peters kids and the main antagonist of the Fighter series.

Description
''The main antagonist of the Fighter series, Nathan is a madman with dark elemental powers, the worst combination for a villain. ''

Physical Appearance
Nathan is described as a tall, muscular man with inky, black hair and hazel eyes. He usually wears a black turtleneck sweater, dark pants, black boots, and what appears to be silver bracelets around his wrists.

Personality
Like his sons, Nathan is cruel, vicious, and very persistent in getting what he wants. This is linked to his elemental powers, where he let the hate for Sam, take over his abilities and his body.

He has no qualms about killing people, even his own family, being willing to kill his oldest stepson Josh, when he got in his way of ending his sister, Jo. He even went as far as to double-cross his own son, Issac, trapping him inside his body along with his snow and ice powers.

Powers/Abilities
Darkness Manipulation: can generate, move, and manipulate darkness to his will
 * Umbra-Telekinesis: lets Nathan manipulate shadows. He is also shown to be able to grab onto other people's shadows as well in the books.
 * Tentacle Extension: has the power to create and manipulate tentacles. These sometimes act as chains around another's wrists and ankles, as seen on Josh in Facing the Elements.
 * Umbra-kinetic Flight: is able to fly via shadows.
 * Possession: can possess people's bodies through his darkness manipulation. It's implied the darkness plunges into their veins, giving Nathan control over them like a puppet. 
 * Electrokinesis: has the ability to generate and manipulate lightning at his fingertips.
 * Elemental Absorption: has the ability to absorb powers from other elementals, as demonstrated in Return to Ghost Town.

Stolen Powers/Abilities

 * Ice Manipulation: stole Issac's ability to create, generate, and manipulate ice and snow. He only used this once in the sequel, where he shoots an icy blast between Sam's eyes, causing him to shake heavily with hypothermia.

Trivia

 * His middle name is Lucas, like his stepson's, Luke's, full first name.
 * His weapon is a dark, black scythe.
 * Before he died, he was technically the legal guardian of the Lopez kids (minus Josh).