Kozik first appeared in the Season 2 episode "The Culling" where he provided extra muscle when the Charming clubhouse was on lockdown and was also selected as one of the Sons of Anarchy's "10 best" to take part in the arranged unarmed battle with LOAN. It was shown he instantly had conflict with Tig, interestingly both held the rank of Sgt At Arms for their respective charters.
He appeared again in the Season 3 premiere at Half-Sack's wake, where he told Clay and Bobby that he wanted to come back to the Charming chapter. The contentious relationship with Tig is revealed in Season 3 in the episode "June Wedding" to be as the result of a dog named Missy from both of their pasts. His wish to transfer to SAMCRO however is blocked twice due to Tig's no vote when Clay calls for decision to be made on the matter. He is present at the execution of June Stahl
Kozik appears with the club waiting outside Stockton Prison for the members to be released. He hugs Tig upon his release. Tig found out he patched into SAMCRO after he was sent to Stockton. He loses a shipment of guns shortly afterwards to local kids who sell them to two of Vivica's sons but are caught later and after a beating by Kozik and the rest of SAMCRO they confess and the stolen goods are retrieved.
He was killed in episode "Call of Duty" when he stepped on a land mine while fighting the Lobo Cartel. His last words were " You gotta be shittin me." His MC cut was later sent back to the Tacoma charter.