Jennings Rudolph is a character in the Season 2 episode titled "Condemned".
Jennings Rudolph is the director of a top secret research station in the Aleutians which has been working on an antidote to a Russian biological warfare agent which the F.I.R.M. had obtained from Afghanistan. However the agent somehow infected the members of the station, causing widespread havoc. Outside, the station personnel are killing one another. Rudolph locks himself in his room and makes a video recording where he says that time is running out. Madness and paranoia are spreading like wildfire. He also takes the opportunity to say goodbye to his family.
When Hawke and Caitlin land at the station to investigate, they also become infected, but they notice that Rudolph mentions in the tape that "a team in the secure lab thought they had it licked." This gives them a clue how to find the solution to their problems.