Jonathan Matijevich on Day 1
|Portrayed by||Rudolf Martin|
|First appearance||Day 1: 1:00 AM – 2:00 AM|
|Last appearance||Day 1: 7:00 AM – 8:00 AM|
 Day 1
After Mandy blew up the plane and stole the ID of the photographer, Martin Belkin, Jonathan was able to successfully assume the identity of Martin Belkin. He previously underwent plastic surgery to have the exact same appearance of Martin.
Right after Mandy's partner Bridgit handed over the ID to Gaines, Jonathan shot Bridgit as Gaines was having problems with her.
Later on at Senator Palmer's press conference, Jonathan had Jack Bauer smuggle in a collapsible rifle through security. After Jack had successfully gotten through, Jack was told to meet with Jonathan in a side room. Jonathan then told Jack to assemble the rifle while he put on latex gloves so he could frame Jack for the assassination of Palmer. Just as Jonathan was ready to shoot Palmer, Jack intervened by grabbing for a Secret Service agent's weapon, causing chaos so Palmer would be able to be safely evacuated. During this Jonathan was able to escape.
- Rudolf Martin portrayed both Jonathan Matijevich and Martin Belkin.