Dad, did you give up on that phone call with your boss when the pig got loose in the car? I probably should have, but no. And if Meemaw's brother Fred gave up, do you think we'd have defeated the British in World War II? Definitely not the case. And Mom, will you ever give up on making us read books and eat healthy food, even though we fight you every step of the way? I mean, things look pretty bad for us. But we've come this far and Meemaw's party isn't over yet. So shouldn't we at least try to get there?”
— Greg motivating his family that they can arrive at Meemaw's party before it's over

The Heffleys is a family on Earth.

Family Tree

Gramma Heffley
Grandpa Heffley
Fred Heffley
Susan Heffley
Frank Heffley
Rodrick Heffley
Greg Heffley
Manny Heffley





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The Perdigons

Chen Perdigon · Colten Perdigon · Davey Perdigon · Duncan Perdigon · Maya Perdigon · Melissa Perdigon · Reeves Perdigon · Russell Perdigon

The Potters

Harry Potter · Henry Potter I · Henry Potter II · Lilian Potter

The Bartleys

Damian's family: Damian Bartley · Mr. Bartley · Mrs. Bartley
Warrens: Angus Warren · Ann Warren · Daniel Warren

The Baudelaires

Beatrice Baudelaire · Beatrice Baudelaire II · Bertrand Baudelaire · Klaus Baudelaire · Sunny Baudelaire · Violet Baudelaire

The Blacksmiths

Kai · Maya · Nya · Ray

The Chens

Chen · Mother Chen · Skylor Chen

The Dyers

Milton Dyer · Mrs. Dyer · Peter Dyer · Peter Harris Dyer · Scott Dyer

The Garmadons

First Spinjitzu Master · Garmadon · Lloyd Montgomery Garmadon · Maternal Garmadons · Misako · Wu

The Gordons

Cliff Gordon · Jay Gordon · Jay's Mother
Walkers: Ed Walker · Edna Walker · Jay Walker

The Hancocks

Mrs. Hancock · Robert Hancock

The Heffleys

Frank Heffley · Fred Heffley · Grandpa Heffley · Greg Heffley · Manny Heffley · Meemaw · Rodrick Heffley · Susan Heffley
Pets: Pig Heffley

The Johnsons

Ethan Johnson

The Juliens

Tinkerer Julien
Androids: Falcon · Juggernaut · Tai-D · Zane Julien

The Pierces

Elizabeth Pierce · Emily Pierce · Evan Pierce · Eve Pierce · Evelyn Pierce · Father Pierce · Mother Pierce · Pierce

The Quagmires

Duncan Quagmire · Isadora Quagmire · Mr. Quagmire · Mrs. Quagmire · Quigley Quagmire

The Royal Blacksmiths

Cole · Cole's Grandfather · Lilly · Lou

The Snickets

Jacques Snicket · Kit Snicket · Lemony Snicket

The Stringfields

Ethan Stringfield

The Waldens

Christina Walden · June Walden · Stan Walden