https://screenrant.com/24-villains-best-ranked/

24 owes much of its acclaim to its diverse range of villains. While some may be forgettable, others significantly enrich the viewing experience.

10 Greatest Villains Jack Bauer Faced in 24 (https://www.cbr.com/24-jack-bauer-best-villains/)

Jack Bauer encountered a variety of dangerous and nefarious individuals during his time as 24's heroic main character.