- Big Good: He's the one giving Lt. Fairburne many of his missions and vital intel, and is central to helping the Allies find people willing to help them fight the Nazis and Italian Fascists.
- Colonel Badass: Despite being a Non-Action Guy, he's still counts due to his willingness to work behind Axis lines and his ability to help negotiate alliances with La Résistance and The Mafia.
- The Handler: He's the one in Allied command who gives Karl missions directly, usually related to aiding the Allied war effort. By extension, he's also this to both La Résistance and The Mafia, succeeding in negotiating both to help the Allied cause by the middle of the campaign.
- Horrible Judge of Character: He falls hook, line, and sinker for Major Dorfmann's intelligence, which, unfortunately, leads to the massacre of the Allagra Partisans late in the campaign.
- Nice Job Breaking It, Hero!: Zig Zagged Trope. While his decision to ally himself with Dinelli ultimately helps them to stop the Axis operations in the area, it also indirectly leads to Sofia distrusting him and Karl, causing her and several of the partisans to be Lured into a Trap and massacred.
- Non-Action Guy: In the main story, he prefers staying away from combat, preferring to gather intel and spy on the Axis forces.
Leader of the Allagran Partisans, and a former nurse.
- Boom, Headshot!: Bohm shoots her in the head during Karl's raid on his mountain HQ.
- Faux Action Girl: Has hints of this with her deeds mostly happening off-screen, who inherited her position as leader of the local resistance from her father and ultimately leads them into an obvious trap, and her confrontation with Bohm has her barely put up a fight before killed.
- Heroic Sacrifice: She shields Karl from Bohm and his men, giving the latter an opening but costing her her life.
- It's All My Fault: Following her capture by Bohm, she tells Karl that it's her fault that the partisans were massacred.
- Lured into a Trap: Kessler leaks him false intelligence about her father being held at the interrogation block in Giovi Fiorini. Without thinking, she and most of her partisans raid the town, only to be met by prepared German forces and massacred.
- Rebel Leader: Leader of the Allagran Partisans by the time Karl meets her. Notable in that she only became this when her father, the previous one, was taken away by Bohm and his men.
- Red Baron: She's known as "The Angel" by both the partisans and OSS, mainly due to her saving many of the former's lives just as they were being wiped out by German and Italian forces.
- Torture Technician: Thanks to being a former nurse, she knows how to hurt her enemies when interrogating them, which she threatens to do with Kessler.
- Womanchild: Is accused of being this by Dr. Kessler following the latter's capture. Given her attachment to her father and how she impulsively commands her partisans not long after, he's probably got a point.
- You Killed My Father: Part of her motivation in leading the partisans against the Nazis and Italian Fascists is to avenge her father, who was taken away and subsequently executed by General Bohm's men.
The first partisan Karl comes across. He later becomes one of Karl's and Weaver's regular contacts within the organization.
- Incurable Cough of Death: Is infected with Typhus early on in the story, resulting in him becoming chronically ill for the first half. Thankfully, Karl comes across Typhus vaccines, allowing him to be cured before his illness can become fatal.
- Mauve Shirt: Is among the few partisans aside from Sofia to have an importance to the plot as well as being one of the few to survive.
- Sole Survivor: He's among the few named partisans to survive, given that he wasn't present in the massacre that wiped the rest of them out.
- What Happened to the Mouse?: Despite surviving the Giovi Fiorini massacre, he isn't featured in the epilogue, leaving his final fate unknown.
Another one of Karl's contacts in the partisans, and Sofia's right-hand man.
- Authority Equals Asskicking: A high-ranking partisan member, and also capable of slaughtering an entire German platoon even when most of the partisans are being massacred in an ambush.
- Mr. Exposition: His role is mainly to give Karl info on the partisans as well as the Italian fascists opposing them.
- Number Two: He's the one in charge of Allagra Partisans when Sofia's not around. Best shown in the Giovi Fiorini Mansion mission, where he manages to stall an entire German platoon with only a handful of men despite most of them being massacred only minutes before.
- Sole Survivor: If Karl takes the right actions, he and his group are among the few partisans to survive Bohm's ambush unscathed.
- Video Game Caring Potential: Karl can choose to perform a Big Damn Heroes moment and save Lucio and his group of surviving partisans by killing the German forces surrounding their position.
- What Happened to the Mouse?: Despite potentially surviving the Giovi Fiorini massacre like Giancarlo, he isn't shown in the epilogue, leaving his fate ambiguous.
Don of the Allagran Mafia, who later becomes a valuable ally for the Allies.
- Affably Evil: He's the head of the local mafia, who is shown to be a rather friendly and approachable person to Karl during their only meeting.
- Arch-Enemy: He's considers Piero Capo, head of the local Black Brigade and an ardent fascist, his, mainly due to Capo's desire to pillage and steal art from the local monastery.
- The Don: Of the local mafia. It's due to this that he has eyes and ears all over Allagra in the form of his various mafiosi, something Weaver and Karl are keen on getting a hold of.
- Enemy Mine: He's working with the Allied forces mainly because they both oppose the Nazis and the Italian fascists.
- Even Evil Has Standards: He may be a criminal, but he's also a man of art and culture. Among the reasons he vehemently opposes the Nazis and Mussolini's fascists is due to them stealing precious artwork from the local monastery. He also finds General Bohm to be an irredeemable monster thanks to the atrocities committed in his name.
- I Gave My Word: Following Capo's demise, Dinelli keeps his word of helping both the Allies and the partisans by leaking intel about Major Rothbauer to Weaver, as well as providing Karl transport and a safe passage to Bohm's mountain base.
- Small Role, Big Impact: He only appears once onscreen, but his alliance with the OSS and the partisans is what ultimately leads to General Bohm's plans being stopped for good.
- Spanner in the Works: Thanks to him and his gang, he's able to tip off Karl and Weaver about part of Bohm's plans as well as help Karl sneak into the German General's base late in the campaign. Had he not allied with them, Karl and the OSS would have most likely failed to stop the German plans in time.
A mafia enforcer, who becomes one of Karl's contacts by providing him vital intel on the Nazis.
- Enemy Mine: Lampshaded by himself during his first meeting with Karl, noting that it's strange that Allied operatives and gangsters are now working in tandem.
- Mr. Exposition: He's there mainly to give Karl vital intel on what the Germans are doing in the areas he's tasked with investigating.
- Nice Hat: Is always seen wearing a beret, which he wears in order to help conceal his identity from any Axis soldiers.
- No Name Given: His real name is never given.
- Spanner in the Works: He's among those responsible for stealing supplies from the Germans at the Lorino Dockyard, causing several important operations including the delivery of important missile components to be delayed or hampered.
Known among the Allies as "The Butcher of Bologna", he is a mysterious German General handling Dr. Kessler's new missile project.
- Asshole Victim: Given how he orchestrated numerous massacres against both the partisans and innocent civilains, absolutely no one mourned for him when Karl killed him.
- Big Bad: He's the primary source of conflict here, being the one responsible for the various massacres being carried out against partisans and civilians, not to mention handling Dr. Kessler's missile project.
- Card-Carrying Villain: He tells Karl that he can be either a man or a monster during their final confrontation.
- Cool Plane: He's managed to construct a Horten Ho.XVIII, a prototype jet bomber capable of carrying the Ms 300 "Razor" missiles without being detected by Allied radar, and capable of flying fast enough to evade Allied Anti-Air fire.
- Contrasting Sequel Antagonist:
- General Franz Vahlen's Project Seuche was Awesome, but Impractical from the start and suffered from continous problems and delays in production. Böhm's missile project, while Boring, but Practical, is also far more successful even during the testing stages, with several Allied merchant vessels being sunk, including the spy ship Orchidea, as shown in the opening. Also, while Vahlen was widely known even amongst Allied intelligence due to his reputation, they had a hard time researching on Böhm, due to efforts not to be seen by anyone. Vahlen, when finally confronted by Karl, is a Non-Action Big Bad and chooses to stay away from any fighting, and is The Unfought. Böhm? He leads an assassination attempt slash counterattack on General Eisenhower and the Allied Invasion fleet just before Operation Avalanche begins. He and his Horten Flying Wing serve as the Final Boss.
- Dr. Hermann Wolff is a Non-Action Big Bad who immediately sells out the Nazis to become a Soviet sympathizer, while Böhm remains loyal to the Nazi cause throughout. Also, Karl never meets Wolff face-to-face, and simply shoots him in the head for his trouble. Böhm by contrast, holds Karl at gunpoint, and is shown willing to get his hands dirty by directly taking part in the attempted assassination of Gen. Eisenhower and the pre-emptive strike on the Avalanche invasion fleet.
- Double Agent: As Dorfmann, he hands several non-vital German plans to Weaver, while also collecting any vital Allied intelligence himself to plan one step ahead.
- Faux Affably Evil: When Karl finally meets him, he cheerfully discusses Nietzche to Karl, all the while planning on torturing and eventually killing him and Sofia.
- Final Boss: Unlike the previous two game's antagonists, Böhm is fought due to being in the Horten Flying Wing bomber and commanding its crew.
- "Get Back Here!" Boss: During the final segment of the Allagra Fortress mission, Karl must go after Gen. Böhm, who attempts to escape in his Horten Flying Wing bomber. While the bomber itself is heavily armored, Karl can bring it down by shooting either it's four engines or the Ms 300 "Razor" missile slung underneath it.
- The Ghost: Throughout the campaign, his name is constantly brought up, but neither the Allies nor even the Axis have ever seen him in person.
- Hero Killer: He kills Sofia during the final mission.
- Hoist by His Own Petard: One way of taking him and his bomber out is by shooting the Razor missile, one of the very same ones he's commissioned, slung underneath his plane as he's getting way.
- Hope Crusher: He enjoys inducing despair into his enemies, as he demonstrates with Sofia.
- I Have Many Names: He's also known as Hans Dorfmann, Weaver's informant within the German High Command.
- Laughing Mad: Downplayed but once he reveals himself he's giggling and chuckling about his actions and plans.
- Manipulative Bastard: He's able to sweet talk the Allies into performing certain actions through the providing of German inteligence. The only person he never fools is Karl, but even then he isn't able to conclusively prove Kessler's capture was a setup until it's too late.
- Master of Disguise: Thanks to no one having ever seen him in person, he can pose as other individuals such as Major Dorfmann.
- Near-Villain Victory: He comes remarkably close to stopping Operation Avalanche and killing Gen. Eisenhower when he boards his plane and manages to take off. It's only Karl's Improbable Aiming Skills that prevent disaster from happening.
- No One Sees the Boss: Nobody knows his true identity, not even his own men or even his Italian allies. Which makes it easy for him to assume another identity in Major Dorfmann.
- Obligatory War Crime Scene: All those civilian massacres seen throughout the campaign? Those were committed under his orders.
- The Mole: As Dorfmann, he has access to Allied intelligence through Weaver.
- "The Reason You Suck" Speech: Just as he's escaping in his new bomber, he takes the time to give Karl a long one through a loudspeaker about how he sank the Orchidea, how Karl couldn't save Sofia, and how he's going to help Germany win the war.
- Stupid Jetpack Hitler: He's the one heading Dr. Kessler's missile project, and is thus responsible for their existence. He even manages to develop an advanced aircraft capable of delivering said missiles without being intercepted by Allied fighters, too.
- Underestimating Badassery: What ultimately costs him his life and his plan. He very nearly manages to get away and take off in his advanced jet bomber, only for Karl's Improbable Aiming Skills to save the day when the latter snipes his plane's engines and the missile warhead on his plane, causing it to crash and killing Bohm.
- Walking Spoiler: Due to actually being Major Dorfmann, Weaver's informant.
- You Are Too Late: Tells Karl during their confrontation that he cannot stop his Evil Plan. Because he's managed to create a delivery system for his missiles that cannot be stopped by Allied fighters nor Anti-Air fire: a flying-wing jet bomber that's years ahead of its time. And, if Karl isn't fast enough, he most certainly can and will get away.
A German scientist specializing in rocket technology, and the one responsible for the creation of a revolutionary new anti-ship missile system, the Ms 300 "Razor".
- The Alcoholic: According to Allied intelligence, he's very fond of drinking. When Karl stumbles across his quarters in the Maggazeno Facility, it's littered with dozens of bottles, with him being drunk on his bed. It also becomes a plot point when it's revealed that it's thanks to his alcoholism that he's dying of liver cancer.
- Bald of Evil: Bald, and a very fanatic Nazi loyal to Bohm.
- Beard of Evil: Sports a white beard, and is a supporter of the Nazi regime.
- Bunny-Ears Lawyer: He's an immense alcoholic who reeks of the stuff, but he's also a pioneer in the development of rocket and missile technology.
- Co-Dragons: With Major Rothbauer, to Bohm. While Rothbauer is in terms of military rank Bohm's Number Two, Kessler is the one responsible for handling the missiles Bohm intends on using against Allied shipping.
- The Evil Genius: Among Bohm's inner circle, he's the smartest one, being a rocket scientist and all.
- Fat Bastard: Just as plump as Salvatore Dinelli, but far more evil.
- Functional Addict: Despite being an alcoholic and being drunk half of the time, he's still managed to help develop a revolutionary guided missile system.
- Living MacGuffin: The Allies want him as he has vital information on advanced rocket technology.
- Secretly Dying: It's revealed late in the campaign that he's actually dying of liver cancer, thus why he agreed to Bohm leaving him to the Allies, as he will be of no further use to anyone.
- Sole Survivor: He's the only major antagonist not killed by Karl in the main campaign. However, given he's already dying of cancer, he won't have much time left anyway.
- Stupid Jetpack Hitler: He's responsible for the development of advanced anti-ship missiles capable of sinking any Allied ship in a single hit. In addition, he's also in close contact with Dr. Hermann Wolff, one of the key scientists involved in the V2 rocket program, as evidenced by the intel Karl retrieves.
- Trojan Horse: Allows himself to be captured by Karl so that he can divulge false intel to Sofia regarding her father, allowing the partisans to be Lured into a Trap and massacred by prepared German forces. In addition, he will not be much of use to the Allies as well, due to already dying of liver cancer.
- You Have Outlived Your Usefulness: A willing example, as he knows he's dying of liver cancer and will be of no further use to anyone. Thus, he asks Bohm to set him up to be captured by Karl and the Allies in order to help his superior to spring a trap against the partisans.
General Bohm's confidant and right-hand man.
- Arc Villain: Main antagonist of the 7th mission, and the one behind the massacre of the Allagra partisans.
- Bald of Evil: Like Kessler, he's bald, and a loyal follower of Bohm and the Nazis.
- Character Death: Karl kills him as part of his main objectives.
- Co-Dragons: With Kessler to Bohm. While Kessler handles the missile project, Rothbauer is responsible for keeping the German General's Evil Plan a secret.
- The Confidant: He's the one tasked by General Bohm with handling any top-secret affairs. Which is why Bohm, as Dorfmann, tips off the Allies about his location.
- Unwitting Pawn: Ultimately, he was nothing more than another tool Bohm used to get his Evil Plan going, as the intel Karl retrieves during the Giovi Fiorini Mansion mission reveals.
- You Have Outlived Your Usefulness: Indirect example. Following Kessler's capture and the Allagra partisans being massacred, enough German troops are diverted away from Rothbauer's mansion to allow an opening for Karl to kill him. Intel retrieved during the mission reveals Bohm essentially left his own confidant to be killed.
A high-ranking Luftwaffe General in charge of San Cellini's airbase, and Karl's first target.
- Arc Villain: Of the San Cellini Island mission, given that he's the one in command of the German garrison there.
- Character Death: Karl kills him in order to extract intel on the German missile operation.
- Propaganda Piece: In-Universe example. He turned the entire sinking of the SS Orchidea into this, down to littering the entire island of San Cellini with cameras.
- Starter Villain: He's the first Axis officer Karl goes after, setting up the rest of the game's plot.
Head of the Black Brigade in Allagra, and a fanatical Italian fascist.
- Arc Villain: Of the Abrunza Monastery mission, where he, with help from local German forces, is pillaging the art from the titular monastery in order to sell to the black market.
- Arch-Enemy: He considers Salvatore Dinelli as this, to the point that he takes the time to speak out against The Don when pillaging through the monastery's art collection.
- And There Was Much Rejoicing: Upon Karl killing and then confirming Capo's death to Dinelli, he, the civilian populace of Allagra, and the partisans all feel relieved at his death.
- Asshole Victim: No one, not even his German allies, felt sorry for his demise.
- Character Death: Karl kills him in order to secure an alliance with Dinelli and The Mafia.
- Les Collaborateurs: Aside from being an ardent fascist, he is also in close contact with General Bohm through Rothbauer.
Corrupt Harbormaster of the Lorrino Dockyard, and a close contact of Piero Capo.
Hitler's favorite scientist, and the man responsible for the Deathstorm Project.
- Arc Villain: Of the 3rd Deathstorm mission, where Karl is tasked with killing him and destroying his project for good.
- Bald of Evil: Like Dr. Kessler, he's bald, and is part of Hitler's inner circle.
- Big Bad: Of the Deathstorm Downloadable Content campaigns. All of the actions done by the Germans in attempting to complete the titular project acted under his personal orders.
- Character Death: Karl kills him in order to retrieve the reactor keys from him, as well as to stop the Deathstorm Project for good.
- The Evil Genius: A brilliant German scientist, and also a fanatical supporter of Hitler.
- Secret Weapon: What Deathstorm, his brainchild, turns out to be: a crude type of nuclear device designed to rain radioactive materials over Allied landing beaches in the event of an invasion of Europe.
- Stupid Jetpack Hitler: He's responsible for the Nazis developing a crude, but potentially devastating, nuclear weapon designed to rain radioactive materials onto advancing Allied troops.
- Flat Character: Their personalities aren't developed much, with their main roles in the story each being a Living MacGuffin for the Alsos Mission as well as associate of Prof. Bosch.
- Living MacGuffin: Karl is given the optional task of capturing any of them, as all three of them hold vital information that the Manhattan Project could use.
- Non-Lethal K.O.: Karl can get up close to them and punch them into unconsciousness, allowing them to be taken away and hidden onto the back of a truck.
- Stupid Jetpack Hitler: They're helping to develop nuclear weapons for the 3rd Reich, working directly under Prof. Bosch in order to help him finish it before the Allies can invade Western Europe.
- Video Game Caring Potential: Karl can knock out all three of them and save all three of them from the destruction of the nuclear warhead and the town it was built in. An achievement can be netted for this.
- Video Game Cruelty Potential: Karl can simply kill them alongside the entire German garrison and take their research. Again, an achievement can be gained from this.
An elite German Paratrooper unit first encountered by Karl during the 2nd Deathstorm mission.
- Attack Pattern Alpha: In the 2nd Deathstorm level, Karl must find a special transmission code (later revealed to be " Iron Scorpion") in order to get them to move into the Italian town in order to ambush them.
- Awesome Personnel Carrier: In both appearances, they're always shown being accompanied by heavily-armed half-tracks and later Armored Cars.
- Cold Sniper: Several of their members are highly trained snipers, distinguished by their black ski masks and black sniper rifles.
- Dark Is Evil: All of them wear black uniforms, and are shown guarding important Nazi personnel as well as partaking in war crimes.
- Elite Mooks: Up to Eleven. All of their members are essentially elite versions of the existing German troop types sans the standard Infantry. Their standard member alone is already this to the Jager Troops, who are already Elite Mooks themselves.
- The Enemy Weapons Are Better: Compared to the weapons Karl normally uses during missions, these guys pack much better firepower on average, including a number of Rare Guns like the FG42 and Neunfaust (both of which are weapons Karl cannot spawn with at the start of a level).
- Expy: Of the HYDRA soldiers from Captain America: The First Avenger, particularly during the early parts of the film. Like them, they are elite and heavily armed German soldiers armed with advanced weaponry, wear all-black uniforms, and are guarding important German scientists.
- Faceless Goons: With the exceptions of the members shown in the page image as well as their officers, all of them wear black ski masks in order to look more intimidating to their enemies.
- More Dakka: Valkyrie Officers are armed with the Mauser M712 Schnellfeuer machine-pistol, which can be a nasty shock to anyone who assumes that they're armed only with a dinky little handgun.
- Praetorian Guard: They often serve as bodyguards for important Axis VIPs, including Professor Bosch and at least two of the scientists working under him.
- Rare Guns: Thanks to being an elite unit, many of their members have ready access to the Mkb. 42(H) and the FG42, while their Faust Troopers have access to the extremely rare Neunfaust Launcher.
- Super Prototype: They have access to the Neunfaust, an experimental rocket launcher that is far superior to the Panzerfaust used by regular German troops.
An Italian nuclear physicist who is forced by the Germans into helping develop nuclear weaponry for them.
- Heroic Suicide: He shoots himself in the head to avoid divulging any important information to the Germans.
- Living MacGuffin: The Germans consider him as one, due to his expertise in nuclear physics. Which is why Galvani chose the only way out: to kill himself and hide his existing research for the Allies to find.
- Small Role, Big Impact: His suicide delays the development of Deathstorm, and gives Karl and the OSS time to track down the place where the project is being carried out.
Antonello's wife, whom the Germans suspect is an Allied spy.
- Damsel in Distress: The Germans have her under house arrest. Thus, Karl is tasked with freeing her and helping her to escape.
- Dismantled Macguffin: Justified. She's separated her music box, which contains her husband's research notes, from the key used to open it in order to prevent the Germans from opening it, much less find the notes in question.
- The Mole: The Allies know about Dr. Galvani's existence thanks to her leaking info to them.
- Small Role, Big Impact: She has a few seconds worth of screentime, but those few seconds prove vital as she's managed to succeed in hiding Dr. Galvani's nuclear research from the Germans by hiding them in a music box, allowing Karl to find said music box and hand the research over to the Alsos Mission instead.