Main Characters Sean Walker 22 main appearances Leila Buchanan 22 main appearances Sophia Maguire 22 main appearances Blake Sterling 22 main appearances President Elias Martinez 22 main appearances Simon Lee 21 main appearances Vice-President Raymond Jarvis 20 main appearances Christina Martinez 19 main appearances Vicky Roberts 18 main appearances Michael Buchanan 17 main appearances Thomas 12 main appearances
Recurring Guest Characters General Armbruster 11 guest appearances Devon 11 guest appearances Chief of Staff Richard Peel 10 guest appearances Carlos Geller 8 guest appearances Agent Angela "Angie" Collier 7 guest appearances Aaron 7 guest appearances Carter 6 guest appearances Samantha Buchanan 6 guest appearances Matron 6 guest appearances Air Marshal Dan Taylor 5 guest appearances Maureen Donovan 5 guest appearances Dempsey 5 guest appearances Isabel 5 guest appearances James Dempsey 5 guest appearances Dr. Lu 5 guest appearances David Martinez 4 guest appearances Agent Mike Garret 4 guest appearances Senator Catherine Lewis 4 guest appearances Jarvis' Secretary Eva 4 guest appearances Rachel 3 guest appearances ⇤ « 1 2 3 4 5 6 7 8 9 10 » ⇥