Character of Hey Arnold!
Timberly Johanssen
Occupation	First-grade student
Family	Father Martin Johanssen Mother Mrs. Johanssen Brothers Gerald and Jamie O
Best friends	Unknown
Relationships	Crush on Arnold (Timberly Loves Arnold)
Voiced by	Avriel Epps Francesca Marie Smith

Timberly Johanssen is a fictional character in the Hey Arnold! TV Series.

Timberly is Gerald and Jamie O's little sister. She's four years old in "Gerald Comes Over" and she's in first grade in "Timberly Loves Arnold". Jamie O is nice to Timberly more than his brother Gerald, whom he usually bullies, and whose innocent actions often cause Gerald to get in trouble. Different from all of the other children in the show, Timberly seems to be the only character who ages across seasons, her first appearance, it was said that she is four years old, but in later seasons she is already in the first grade. She is voiced by Avriel Epps.

Appears inEdit

• Chocolate Turtles
• Cool Party
• Gerald Comes Over
• Gerald Moves Out
• Gerald vs. Jamie O
• Ransom
• The High Life
• Timberly Loves Arnold