Until the end of season four, he was the Vice President of the club.
He has a number of tattoos, most notably his club's logo on his back, a tribute to his father John Teller on his right arm, his son Abel's name on his chest, and his second son, also the name of his deceased brother, Thomas on his left arm. President" (later replaced with "President"), "Men of Mayhem", and a memorial patch for Opie.
Abel was born 10 weeks premature and addicted to crank in the pilot episode.
In season 5, Jax married his high-school sweetheart and the love of his life Tara Knowles and who is mother of his second son, Thomas.
His father died in 1993 and his mother remarried Clay Morrow, who then became President of the Sons of Anarchy Motorcycle Club.