Greg Heffley

Rowley Jefferson

Rodrick Heffley

Holly Hills

Frank Heffley

Susan Heffley

Fregley

Chirag Gupta

Heather Hills

Patty Farrell

Manny Heffley

Manny Heffley

Stan Warren

Grandpa Heffley

Isabella Wendell-Jefferson

Mr. Jefferson

Madison

Mr. Draybick

Coach Malone

Lenwood Heath

Ben Segal

Chris the Bass Player

Taylor Pringle

Troop Master Barrett

Mrs. Hills

Mr. Jonathon Hills

Cranium Shaker Operator

Girl at Cranium Shaker #1

Girl at Cranium Shaker #2

Cop

Country Club Manager

Receptionist Amy

Receptionist Julie

Rodrick's Rescuer

Snack Bar Girl

High Diving Fan

Country Club Waiter

Country Club Pool Guy

Country Club Waitress

Country Club Valet

Spag Union Math Boy

Spag Union Tracking Device Boy

Tim Warren

Biff Warren

Chip Warren

Li'l Cutie

Newscaster

Mrs. Warren

Man in Kitchen

Restaurant Owner

Dry Cleaner

Confederate Soldier

Spag Union Announcer

Spag Union Boy

Popcorn Vendor (uncredited)

Student (uncredited)

Cook on Phone (uncredited)

Student (voice) (uncredited)

Union Rifleman (uncredited)

Sunblock Guy (uncredited)

Bus Driver (uncredited)