Jackson Nathaniel "Jax" Teller is a fictional character and the protagonist of the FX television series Sons of Anarchy, portrayed by Charlie Hunnam.

John Teller died in a road accident on November 13, 1993, with leadership of SAMCRO passing to Clay Morrow who would eventually marry Gemma, becoming Jax's step-father.

[9] Jax is depicted dressing as unconventional compared to traditional bikers, specifically wearing white Nike Air Force 1 sneakers throughout the series.

He is estranged from his pregnant wife Wendy Case; a methamphetamine addict who overdoses and endangers the life of their unborn son Abel, who is born premature.

As Jax attempts to lead SAMCRO into more peaceful resolutions with other competitors and rivals, he discovers that Tara is being stalked by a former boyfriend, ATF agent Josh Kohn.

Jax rescues the actual informant from being killed by SAMCRO and deduces that Clay is responsible for Donna's death, causing a rift within the club.

SAMCRO is confronted by the League of American Nationalists (LOAN), a powerful white separatist organization led by wealthy businessman Ethan Zobelle and right-wing extremist, A.J.

Jax also learns that his father had a secret family in Belfast and that he has a half-sister named Trinity, daughter of Maureen Ashby, sister of high-ranking IRA priest, Kellan.

Jax reveals to Tara that he plans to leave SAMCRO in good-standing if he backs Clay in a newly brokered deal with the Galindo Mexican drug cartel to sell them guns and mule their cocaine.

As Jax attempts to navigate complex deals with local criminal organizations, the IRA, and the cartel, he learns that a United States Attorney is conducting a RICO operation against the club and its associates.

Tara returns home and begins to secretly arrange for Jax's ex-wife, Wendy, to become the legal guardians of Abel and Thomas.

After a child commits a mass shooting with an automatic weapon SAMCRO sold to Nero's former gang, Jax attempts to relieve local pressure by giving the gun business to other organizations, but IRA boss Gaalen O'Shay refuses.

Marshal Lee Toric seeks revenge for the death of his sister by imprisoned SAMCRO member Otto Delaney, attempting to persuade Clay to become an informant.

Clay is released and meets with O'Shay, but Jax subsequently kills them both, convincing IRA member Connor Malone to give the gunrunning business to Pope's successor, August Marks.

Jax returns home and finds his dead wife as well as the body of sheriff's deputy Lt. Eli Roosevelt, who Juice killed to protect Gemma.

Believing Tara's murder to have been committed by the Chinese Triad, he exacts revenge on them and acts violently toward anyone who stands in his way, unraveling the criminal underworld in Northern California in the process.

Jax meets with Northwestern Sons of Anarchy presidents and admits to killing Jury White, making a deal to convince SAMCRO to excommunicate and execute him.

Jax has Juice killed, murders Unser and Gemma, gives custody of Abel and Thomas to Wendy, and asks Nero to help get his sons out of Charming and ensure they grow up hating their father.

Closing his eyes with a smile and bracing himself for death, Jax collides head-on with a semi-truck, dying in a similar way and on the same highway as his father before him.

Hunnam based Jax's personality and attire on this real life biker, who was killed in a shooting one week into the production of the show's first season.

[15] The Chicago Tribune remarked that Jax is "the heir apparent to the gang", but "has a great deal of nostalgia for his father’s more hippie-ish early hopes for the motorcycle club".