Real Name: James Proudstar
Former aliases: Warpath, Thunderbird (II)
Identity: Secret
Occupation: Adventurer
Legal Status: Citizen of the United States with no known criminal record, still a minor
Place of Birth: Apache Reservation at Camp Verde, Arizona
Marital Status: Single
Known Relatives: Neal Proudstar: (father, deceased), Maria Proudstar (mother, deceased), John Proudstar (Thunderbird I, brother, deceased)
Base of Operations: (current) Camp Verde, Arizona, (former) Apache Reservation at Camp Verde, Arizona; Massachusetts Academy, Berkshire Mountains, Massachusetts; Professor Xavier's School for Gifted Youngsters, Salem Center, Westchester County, New York State; X-Force headquarters, Adirondack Mountains, upstate New York (Bolivar Trask's former Sentinels base)
Group Affiliation: (current) X-Force, (former) Hellions
First Appearance: NEW MUTANTS #16

History: James Proudstar lost his brother, the original Thunderbird, in the second mission with the new X-Men. This was a source of bitterness and resentment towards Professor Xavier, whom James blamed for the death of his brother. So angered was he that he joined with the White Queen's Hellions. After coming to his senses about the White Queen and the Hellions, James went back to the reservation where his family lived. He had given up on the idea of being a costumed adventurer, good or evil, until Cable approached him to join the new team he was building, called X-Force. James declined at first but when he returned home to the reservation, he discovered that it had been completely wiped out. With nowhere to turn, James accepted Cable's offer.

He adopted the name Warpath, rather than going by his brother's codename, Thunderbird, as he had while with the Hellions, in hopes that he could bury the past. Warpath has proven himself to be an invaluable member of X-Force, supplying a great deal of raw power and speed.

He recently underwent a surge of self-confidence, during which he left the team briefly and traveled with a young woman named Risque. Risque betrayed Warpath by drugging him and delivering him to a mutant called Sledge. Sledge later informed Proudstar that a member of his tribe, Michael Whitecloud, had not died in the massacre. Sledge offered to give him to Proudstar for a fee. Proudstar accepted since Whitecloud is the only member of the tribe to know the truth about the massacre. The price Warpath has agreed to pay has not yet been revealed.

Height: 7 ft. 2 in. (6 ft. 1 in. in his first appearance, has since grown to adult height)
Weight: 350 lbs. (214 lbs. in his first appearance)
Eyes: Brown
Hair: Black
Other Distinguishing Features: Thunderbird tattoo on his back

Strength Level: Superhuman Class 75 (with potential to reach Superhuman Class 90 when older)

Known Superhuman Powers: Warpath is a mutant who possesses superhuman strength, speed, stamina, durability, agility, and reflexes.