Nikolai

Nikolai was a Russian intelligence agent during the events of Day 6. He hired lobbyist Mark Bishop to leak intelligence from the White House to the Russians.

Day 6
During the events of Day 6, a Chinese agent came into possession of a FB sub-circuit board from one of the recently recovered Russian Suitcase Nukes. Russian President Yuri Suvarov was informed about the situation and he threatened to deploy his men into a US military base in Central Asia, if Cheng Zhi successfully smuggled the component out of the United States. Since only selected White House officials and CTU personnel knew about the situation, Tom Lennox theorized there was a spy for the Russians.

Nikolai received his information from a man named Mark Bishop, a lobbyist. Bishop had a sexual relationship with Lisa Miller, a chief aide to Vice President Noah Daniels, who took the duties of the President when President Wayne Palmer collapsed into a comatose state. When Lisa took a quick shower, Mark uploaded information from her PDA to Nikolai. When Nikolai asked if Lisa was suspicious of him, Mark claimed that she had no idea he was in cahoots with the Russians.