Just some of the major primary and secondary ones off the top of my head:
- Raul Menendez (Call of Duty: Black Ops II)
- DeFalco (Call of Duty: Black Ops I)
- General Shepard (Call of Duty 4: Modern Warfare II)
- Vladmir Makarov (Call of Duty 4: Modern Warfare II + III)
- Riah (Call of Duty: Infinite Warfare)
- Admiral Kotch (Call of Duty: Infinite Warfare)
- Steiner (Call of Duty: Black Ops I)
- Jonathan Irons (Call of Duty: Advanced Warfare)
- Omar "The Wolf" Suleman (Call of Duty 4: Modern Warfare Remastered)
- Khaled Al-Asad (Call of Duty 4: Modern Warfare)
- Lev Kravchenko (Call of Duty: Black Ops I + II)
- Nikita Dragovich (Call of Duty: Black Ops I)
- General Tian Zhao (Call of Duty: Black Ops II)
- Imram Zakhaev (Call of Duty 4: Modern Warfare)
- Victor Reznor (Call of Duty: World at War + Black Ops I & II)
- Raul Menendez (Call of Duty: Black Ops II)
- DeFalco (Call of Duty: Black Ops I)
- General Shepard (Call of Duty 4: Modern Warfare II)
- Vladmir Makarov (Call of Duty 4: Modern Warfare II + III)
- Riah (Call of Duty: Infinite Warfare)
- Admiral Kotch (Call of Duty: Infinite Warfare)
- Steiner (Call of Duty: Black Ops I)
- Jonathan Irons (Call of Duty: Advanced Warfare)
- Omar "The Wolf" Suleman (Call of Duty 4: Modern Warfare Remastered)
- Khaled Al-Asad (Call of Duty 4: Modern Warfare)
- Lev Kravchenko (Call of Duty: Black Ops I + II)
- Nikita Dragovich (Call of Duty: Black Ops I)
- General Tian Zhao (Call of Duty: Black Ops II)
- Imram Zakhaev (Call of Duty 4: Modern Warfare)
- Victor Reznor (Call of Duty: World at War + Black Ops I & II)