Kate Monster is a main protagonist in Avenue Q. She is a monster who lives on Avenue Q. She is Princeton's love interest, and she likes him as well. According to the West End production's website, she is 23 years old.
Kate is a kindergarten teaching assistant. Her boss is Mrs. Thistletwat.
- What Do You Do With a B.A. In English / It Sucks To Be Me
- Everyone's a Little Bit Racist
- The Internet is for Porn
- Mix Tape
- You Can Be As Loud As The Hell You Want (When You're Making Love)
- Fantasies Come True
- There's a Fine, Fine Line
- There Is Life Outside Your Apartment
- The More You Ruv Someone
- I Wish I Could Go Back to College
- For Now
Broadway and Off-Broadway PortrayersEdit
- Stephanie D'Abruzzo
- Mary Faber
- Carey Anderson
- Christy Carlson Romano
- Anika Larsen
- Sarah Stiles
- Veronica J. Kuehn
- Kerri Brackin
- Brynn O'Malley
- Veronica Hodgson
West End PortayersEdit
- Julie Atherton
- Cassidy Janson
- Rachel Jerram
- Rebecca Lock
- She has a similar personality to Prairie Dawn.
- She has a slight personality change in the school edition. In the original, she loves the internet, and modern technology in general, but in the school version she sees no use for the internet.
- The actress that plays her also plays Lucy the Slut 
- She comes off as friendly/kind, but actually is prejudiced against non-monsters.
| Princeton | Kate Monster | Rod | Nicky | Gary Coleman | Brian | Christmas Eve|
Lucy the Slut | Trekkie Monster | Bad Idea Bears | Mrs. Thistletwat | Ricky