Cypher (Joe Pantoliano)’s Timeline and Summary

Cypher is somehow in contact with the agents. He tells them about Trinity's position and about Neo.
When Neo has taken the red pill, Cypher is there, helping to coordinate his rescue.
Once aboard the Nebuchadnezzar he's just a part of the crew. He does his job reading code, drinks some intense homemade alcohol, and teases Trinity about believing in prophecy and having a thing for Neo.
Then he's talking in the Matrix to Agent Smith about the deal. He gives him Morpheus and Smith inserts him back into the Matrix, oblivious of the real world.
Cypher is able to escape the Ambush by the agents apart from the others (because he isn't a target) and makes it back to the Nebuchadnezzar before them.
He zaps Dozer and Tank, unplugs Apoc and Switch, killing them, and is then killed himself by Tank who was only suffered severe electrical burns and was not dead.