Main Characters Eric Carter 12 main appearances Rebecca Ingram 12 main appearances John Donovan 12 main appearances Keith Mullins 12 main appearances Andy Shalowitz 12 main appearances Mariana Stiles 12 main appearances Nicole Carter 11 main appearances Isaac Carter 10 main appearances Jadalla Bin-Khalid 10 main appearances Henry Donovan 10 main appearances Nilaa Mizrani 8 main appearances Ben Grimes 6 main appearances
Recurring Guest Characters Pentagon Security Marine 1 guest appearances Farmhouse Guard 1 guest appearances Lisa 1 guest appearances CTU Aide 1 guest appearances Local Cop 1 guest appearances FBI Agent Dietrich 1 guest appearances CTU Guard 1 guest appearances EMT 1 guest appearances ER Doctor 1 guest appearances ER Attendant 1 guest appearances ER Nurse 1 guest appearances ⇤ « 1 2 3 4 5 » ⇥