Kate Keys/Walker(Julie Benz)
Cap. Russell Keys(Steve Burton)
John(Eric Close)
Sally Clarke(Catherine Dent)
Amelia Keys(Julie Ann Emery)
Allison 'Allie' Clarke(Dakota Fanning)
Dr. Kreutz(Willie Garson)
Howard Bowen(Jason Gray-Stanford)
Cap. Owen Crawford(Joel Gretsch)
Marty Erickson(John Hawkes)