Matt Helm (1961–1993)
- The Removers (1961)
- The Poisoners (1971)
- The Intimidators (1974)
- The Silencers (1974)
- The Interlopers (1976)
- The Ambushers (1977)
- The Wrecking Crew (1977)
- The Ravagers (1978)
- Murderers' Row (1981)
- The Intriguers (1981)
- The Betrayers (1982)
- The Revengers (1982)
- The Terrorizers (1983)
- The Infiltrators (1984)
- The Vanishers (1986)
- The Demolishers (1987)
- The Frighteners (1989)
- The Threateners (1992)
- The Damagers (1993)