U.S. government officials and non-enemy foreign organizations.
President David Bowers
The President of the United States of America from at least 2001 to 2009. He is highly supportive of Third Echelon.
President Patricia Caldwell
The U.S. President in office from at least 2011 to 2013. She is suspicious of the power and latitude given to Third Echelon and other spy organizations and seeks to restrict them.
- Big Good: Of Conviction as well as Blacklist.
- Comic-Book Fantasy Casting: She has Meryl Streep's face while reminding of Hillary Clinton overall.
- Expy: Pretty clearly one of Hillary Clinton. Although, if you pay really close attention to background NPC dialogue, it's shown that she's a Republican.
- Our Presidents Are Different: President Iron.
- Reasonable Authority Figure: A smart, savvy, and honorable President who has attracted the ire of Megiddo.
- You Didn't See That: Deals this to the Army Rangers who storm the Oval Office before they can take Sam into custody, intending to leave him and Grim to deal with Reed as they see fit to do.
Vice President Calvin Samson
The Vice President during the events of Conviction. He is a member of Megiddo and is part of their attempts to take over the U.S. government.
- Bald of Evil: As a member of Megiddo planning the death of President Caldwell.
- Corrupt Politician: See above.
- Knee-capping: Considering Sam can't kill the Vice President, he does this instead.Sam: You really need to work on that "bulletproof" thing.
- No Party Given: Averted. He's a Blue Dog Democrat.
- Our Vice Presidents Are Different: Vice President Corrupt.
- President Evil: What Megiddo intended for him to be after disposing of Caldwell.
Mitchell "Mitch" Dougherty
A suspected mole in the CIA who is providing information to the President of Georgia.
- Beleaguered Bureaucrat: Seems harmless enough. And is.
- Good Smoking, Evil Smoking: Dougherty can be kidnapped when he's on a smoke break.
- Hanlon's Razor: He's not a traitor, just incompetent.
- The Mole: Subverted.
- Must Have Nicotine: He is a chain smoker, and it is during one of his smoke breaks that Fisher is able to nab him.
- Not What It Looks Like: Claims this. He's right. His insecure PC is being bugged by the Georgians.
- Shout-Out: Information Retrieval is to Brazil.
- Southern-Fried Genius: Has a thick Southern accent but is very good at his job.
- Super OCD: Subverted. He just has the regular kind, compelling him to store data on an insecure PC which the Georgians are able to hack and steal that data from.
- Unwitting Instigator of Doom: His OCD compelled him to hoard classified information on an unsecured computer that the Georgians were able to hack.
Ingrid Ruth Karlthson
A field operations officer who acts as Sam's Fisher contact during the crisis in Indonesia.
- Cunning Linguist: She's a specialist in Indonesian languages, which comes in handy when Third Echelon needs to translate Suhadi Sadono's messages, which are written in mambae, a language from East Timor.
- Deep Cover Agent: Went to the US Embassy in Dili (East Timor) to track down Norman Soth, another deep-cover agent and a member of the Big Bad Duumvirate of the game.
- Distressed Damsel: Taken by Sadono to serve as a translator in his dealings some time into the game, as well as a bargaining chip.
- Femme Fatale: Played with. Ingrid is perfectly capable and doesn't use her sexuality but Sadono is taken with her anyway.
- Overt Agent: A Downplayed Trope example as she's suspected by many but Sadono.
- Stockholm Syndrome: Subverted. She knew full well what a danger Sadono posed through Pandora Tomorrow, though he did treat her humanely, and she does admit that she sees why so many people would follow him.
A CIA contact who's undercover in John Brown's Army.
Dahlia Suleiman Tal
An undercover agent of Shin Bet (Israeli internal security service) who has infiltrated a Syrian terrorist group known as "Grasp of the Corpse" by pretending to be a corrupt member of Mossad. She helps Sam Fisher infiltrate the terrorist's underground research facility in Jerusalem, where the ND-133 is being held.
- Badass Israeli: Lambert says her marksmanship would make Lee Harvey Oswald jealous. And it takes something to infiltrate a terrorist cell.
- CIA Evil, FBI Good: Israeli secret services version. For Sam Fisher and Lambert, the Mossad are nicer guys than the Shin Bet. Unfortunately, Sam has to cooperate with Dahlia, who's a Shin Bet agent. And said agent wants to take the opportunity of Sam's non-official existence to kill him and take the ND-133 once he has it in his possession.
- Double Agent: She cooperates with Third Echelon to help them get the ND-133 but actually plans to get rid of Sam and retrieve it for the Shin Bet, since killing a non-official secret agent won't cause diplomatic issues with the USA.
- No Sense of Humor: She's dead serious and never quips with Sam during the mission.
- Story Branching: If Sam obeys Lambert's orders and kills Dahlia before infiltrating the underground base, the Jerusalem level's end zone is filled with cops. If he spares her life, she will try to ambush him with other snipers in said zone.
Paladin Nine Security
Victor Coste (Howard Siegel)Sam's friend from his Navy SEAL days, "Vic" Coste is a valuable ally to him in the fifth game. Following his days in the Navy, he took up forming "Paladin Nine Security", a security consulting company specializing in high-tech defense solutions and kidnapping recovery work. That said, due to the small staff, he ends up doing most of the field work himself, keeping up enough to still stay useful for Sam when he is called on once more.
- And Now for Someone Completely Different: You play as him during a flashback in Conviction in which he rescues Sam during the First Gulf War.
- Badass in Distress: The entire game of Conviction is narrated from captivity in a Black Arrow cell. The final cutscene implies that Sam broke him out.
- Bash Brothers: With Sam. Much more evident in Blacklist than Conviction, since they actually fight alongside eachother, and a lot of attention is paid to how much concern Sam has over his condition.
- The Big Guy: In Conviction.
- Cool Old Guy
- Demoted to Extra: He serves as a partner in the tutorial for Blacklist, but is put into critical condition by a grenade by the end of it, and remains in the hospital for the game's duration until the ending.
- Gunship Rescue: Pulls this off in the latter part of Conviction.
- In-Series Nickname: "Vic".
- Narrator: For Conviction.
- Remember the New Guy?: He's first mentioned in Conviction as Sam's old war buddy, but had no prior mentions. A Justified Trope in that there was no reason for Sam to contact him prior to Conviction.
- Retired Badass: He is a former Navy SEAL.
Mikhail Andreyevitch Loskov / "Kestrel"
A Voron agent active before the involvement of Sam Fisher in the Third Echelon Conspiracy, Kestrel worked alongside Splinter Cell agent Archer to take down Russian criminal activities within his own country. He apparently died in the end of the prologue campaign in Conviction, but was later recovered by Voron and kept in a coma until Sam and Briggs rescue him in Blacklist.
- Alternate Company Equivalent: In-universe, he is this for a Splinter Cell, with Voron being essentially Russia's Third Echelon.
- Apologetic Attacker: He hates having to fight his own countrymen, but he does it anyway.
- The Combat Pragmatist
- Code Name/Nom de Guerre: Kestrel
- Only Known by Their Nickname: Justified, considering Archer and Kestrel are covert operatives, and probably shouldn't be able to give away their true identities.
- Conscription: The reason Kestrel was in the military at all.
- Dark and Troubled Past: His parents were killed in a terrorist attack when he was six years old. He had a very bad relationship with his foster father, and ended up running away at the age of 14 to live on the streets of St. Petersburg for more than four years alone, where he had many run ins with the police, ultimately arrested at the age of 18. He was conscripted into the military, as was mandatory. When shifted to a counterinsurgency unit for his ability to thrive in the field, he was systematically forced to watch the execution of his friends after they were eventually captured, then subjected to three days of Cold-Blooded Torture until the Spetsnaz rescued him and he was invited to Voron. With a history like that, it's not hard to see how his personality differs from that of Archer.
- Defector from Decadence: Became one after the events of Conviction.
- Disney Death: His fight with Archer did not result in his death, but rather in him being rendered comatose.
- Famous Last Words: Non-canon, and nonlethal regardless, but in Conviction, "Orders are orders, right Chief?"
- Foil: To Archer.
- Impossibly Cool Clothes
- Mother Russia Makes You Strong: Subverted. He's plenty badass and Russian, but he's not any of the other things involved in the trope.
- Not Quite Dead: As revealed in Blacklist through the Briggs missions.
- Red Oni, Blue Oni: Blue to Archer's Red.
- The Runaway: In his history, from the age of 14 to 18.
- Stealth Expert: Seeing as he is the Voron equivalent to a Splinter Cell. However, unlike Splinter Cells, Voron agents are more trained in assault tactics than infiltration, as shown in Blacklist and supported by his history.
- Token Good Teammate: As shown in Blacklist, he's one of the only heroic Voron agents. Probably why they put him in a drug induced coma.