Unfurling the codex…
An unofficial illustrated fan codex of Hey Arnold — its characters, world, story, powers, and lore.
Harold Berman · Arnold Shortman · Gerald Johanssen · Eugene Horowitz · Helga Pataki · Stinky Peterson · Jerry Berman
P.S. 118 School · Helga Pataki's Home · Grandma Gertie's Garden · P.S. 118 · The Park · Hillwood · The Laundromat · The Playground · The Bodega · The Stoop · The Basketball Court · The Cafeteria · The School Gym · The Library · The Principal's Office · The Dormitory · The Kitchen · The Fountain · The Swing Set · The Monkey Bars · The Fire Escape
Arnold's Parents Search · Gerald's Mother · Hotel North Pole Arc · Grandpa Phil's Health · Eugene's Birthday Party · Phoebe's Mother · The Flood · Vampire Boy · The New Kid
The Cool Kids · The Squirrels · The Hotel Boarders · P.S. 118 Baseball Team · The School Band · Lila's Wealthy Friends · The School Faculty · Stinky's Bully Crew · Arnold's Inner Circle · The School Football Team · The Orphanage Residents · The Neighborhood Adults · Gerald's Circus · The Orphanage Staff · The Playground Kids · The School Kids · The Neighborhood Kids
Grandma Gertrude · Mr. Simmons · Sid · Grandpa and Grandma's Story · Helga Pataki's Complicated Home Life · The Pataki Family Fortune · Arnold's Missing Parents · The Neighborhood's Founding · The Orphanage · Mr. Simmons' Demolition Scheme · Gerald's Strict Mother · Phoebe's Divorced Parents · The Big Goo · Stinky's Family Background · Hey Arnold! The Movie (2004) · Arnold's Parents' Departure · Helga's Wealthy Father · The Neighborhood · Gerald's Home Life
Childhood Friendship Loyalty · Multicultural Diversity · Bullying and Empathy · Friendship and Loyalty · Family and Belonging · Poverty and Social Class · Growing Up and Coming of Age · The Power of Imagination · Creativity vs. Conformity · Acceptance and Tolerance · Deception and Honesty · Kindness and Empathy · Social Outcasts and Being Different · The Flawed Adult World · Identity and Self-Discovery