| McCoy | 2000 | | 0 | 3 |
| McNally | 1953 | | 0 | 3 |
| Mechanics from HD 2021-234 | 2022 | | 0 | 3 |
| Medea | 2023 | | 0 | 3 |
| Menobarone Blandau | 2024 | | 0 | 3 |
| Mentacat | 2003 | | 0 | 3 |
| Mercedes Pujol | 1985 | | 0 | 3 |
| Merlock | 1990 | | 0 | 3 |
| Mermaids from W OS 446-02 | 1952 | | 0 | 3 |
| Miccia | 2019 | | 0 | 3 |
| Michael the macaw | 2016 | | 0 | 3 |
| Mickey | 1958 | | 0 | 3 |
| Mickélio | 1982 | | 0 | 3 |
| Mightos | 2003 | | 0 | 3 |
| Miguel Valente | 2017 | | 0 | 3 |
| Mildred Phelps | 1999 | | 0 | 3 |
| Miles Axlerod | 2011 | | 0 | 3 |
| Miller | 1997 | | 0 | 3 |
| Miller from I TL 3391-1P | 2020 | | 0 | 3 |
| Millicent from D 2022-163 | 2023 | | 0 | 3 |
| Miner Johann | 2021 | | 0 | 3 |
| Minister of Winter | 2008 | | 2 | 3 |
| Minuano the horse | 1996 | | 0 | 3 |
| Minuzio | 2024 | | 0 | 3 |
| Miss Babbage | 2026 | | 0 | 3 |
| Miss Bovina | 1939 | | 0 | 3 |
| Miss Cupid | 1967 | | 0 | 3 |
| Miss Meadows | 1949 | | 0 | 3 |
| Miss Penny Wise | 1954 | | 0 | 3 |
| Missus Eagle | 1951 | | 0 | 3 |
| Missus Eagle's children | 1951 | | 0 | 3 |
| Mister Mistero | 2009 | | 0 | 3 |
| Mister Mortimer | 2021 | | 0 | 3 |
| Mistress Ching | 2007 | | 0 | 3 |
| Mizz Jack Sparrer | 1950 | | 0 | 3 |
| Moe Moose | 1956 | | 0 | 3 |
| Mole Beagle | 1978 | | 0 | 3 |
| Moloculo Macawber | 2023 | | 0 | 3 |
| Moni | 2024 | | 0 | 3 |
| Mortimer L. Marquand | 2011 | | 0 | 3 |
| Mother and child bears | 1941 | | 0 | 3 |
| Mournful Mary | 1947 | | 0 | 3 |
| Mr. Blossom | 2021 | | 0 | 3 |
| Mr. Bumblebee | 1965 | | 0 | 3 |
| Mr. Carter | 1997 | | 0 | 3 |
| Mr. Gloom | 2006 | | 0 | 3 |
| Mr. Goldstein | 2009 | | 0 | 3 |
| Mr. Griffiths | 2010 | | 0 | 3 |
| Mr. Hansen | 2019 | | 0 | 3 |
| Mr. Herb | 1999 | | 0 | 3 |
| Mr. Mystery-Man | 1970 | | 0 | 3 |
| Mr. Schultz the butcher | 1939 | | 0 | 3 |
| Mr. Vickle | 2012 | | 0 | 3 |
| Mr. Wishful Number 5 | 1956 | | 0 | 3 |
| Mr. Woolensworth | 2005 | | 0 | 3 |
| Mr. Yatz | 1978 | | 0 | 3 |
| Mrs. Hudsdog | 2024 | | 0 | 3 |
| Mrs. Mitridge | 2002 | | 0 | 3 |
| Mrs. Mouse | 1930 | | 0 | 3 |
| Mrs. Olsen | 2005 | | 0 | 3 |
Minnie Mouse
Lardello
Woody
Ellroy
The Beagle Brats
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