Main Characters Frank Hardy 31 main appearances Joe Hardy 31 main appearances Callie Shaw 30 main appearances Chet Morton 29 main appearances Biff Hooper 29 main appearances Trudy Hardy 28 main appearances Phil Cohen 17 main appearances Jesse Hooper 12 main appearances Fenton Hardy 19 main appearances J.B. Cox 19 main appearances Wilt 6 main appearances Gloria Estabrook 17 main appearances Belinda Conrad 17 main appearances Adrian Munder 11 main appearances Lucy Wayne 10 main appearances Kanika Khan 8 main appearances Drew Darrow 8 main appearances Deputy Con Riley 6 main appearances Hurd Sparewell 5 main appearances William Vogel 4 main appearances Bob Carpenter 3 main appearances Cadmus Quill 2 main appearances
Recurring Guest Characters Nurse 1 guest appearances Professor 1 guest appearances Cop 1 guest appearances Detective Richards 1 guest appearances Young Adrian Munder 1 guest appearances Physics Professor 1 guest appearances Tess Owens 1 guest appearances Noel Bickford 1 guest appearances Burly Bouncer 1 guest appearances DSA Agent 1 guest appearances Dr. Grafton 1 guest appearances Pine Grove Orderly 1 guest appearances Young Drew 1 guest appearances Woman 1 guest appearances Pilot Goon 1 guest appearances ⇤ « 1 2 3 4 5 » ⇥