Having started in 1995—making it the absolute longest of the Webcomics Long-Runners—and still going as of 2023, the full cast of Kevin & Kell is a veritable Cast Herd. These pages alone may require you to pack a lunch.
- The Core Family
- Kevin's relatives and friendsnote Includes his parents, Danielle and George Fennec, Kevin's co-workers with the Herbivore Forum and Hare-Link, and Angelique
- Kell's relatives and friendsnote Includes her parents, Ralph and Martha, Aby and Mark, and Kell's co-workers from Herd Thinners and Dewclaw's Fine Meats
- Lindesfarne's peersnote Includes Fenton and the Fuscus family, Tammy, Rhonda, and Dip
- Rudy's peersnote Includes Bruno, Corrie, Fiona, Edgar, Miranda, Leona, Carl, George Gopher, and Ophelia
- Coney's peersnote Includes Lin, Wendell, Harcourt, Jess, and Tyler
- Younger Charactersnote Generally the children of the characters in the age cohorts of Lindesfarne and Rudy Dewclaw; Turvy, Angstrom, Onk and Ack, Carla, Savanna, and Delphi
- Other charactersnote Includes minor characters such as the Ursal/Silvertip family, and former characters such as Mrs. Aura
