| Description | Character |
| Keeps raising the mission in hopes of getting a 'feather in his cap'. | |
| The 'M' and the 'M' in M&M Enterprises. | |
| He told Yossarian he was cold... and then he died. | |
| Knows how to treat the girls he considers 'nice and clean'. The one he raped and killed wasn't. | |
| Doctor who explains to Yossarian that Catch-22 prohibits him from grounding Yossarian. | |
| Friend of Yossarian who is in love with an Italian prostitute who ignores him. | |
| Lieutenant, and eventually Lieutenant General, obsessed with parades. | |
| Ubiquitous and unwritten rule that, by the end of the novel, simply means that might makes right. | |
| Yossarian's roommate, fond of putting crabapples in his cheeks and crashing bombers. | |
| | Description | Character |
| Mild-mannered chaplain who aides Yossarian whenever possible. | |
| Former Life Magazine photographer always being suffocated by Huple's cat. | |
| One of the most powerful men in the U.S. army, he hopes to one day be an ex-general | |
| After Nately's death, she vows to kill Yossarian and almost succeeds. | |
| A Native American, his family was always on the move because the hundreds of oilmen who followed them where always kicking them off their land when they struck oil. | |
| The man behind Colonel Cathcart, shrewd and cynical. | |
| General who never goes anywhere without his young nurse and son-in-law. | |
| Knows that everyone is trying to kill him. | |
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