Mrs. Brisby's Adventures of Once Upon A Forest is the crossover by Duchess Productions.
Plot:[]
Cast:[]
Rescue Mousey:[]
- Mrs. Brisby
- Mrs. Brisby's Marowak
- Mrs. Brisby's Quagsire
- Mrs. Brisby's Weavile
- Jeremy
- Bernard
- Miss Bianca
- Fievel Mousekewitz
- Tanya Mousekewitz
- Jiminy Cricket
- Timothy Q. Mouse
- Tiger
Guest Star:[]
- Hubie
- Bernie
Main in the Crossovers:[]
- Jerry
- Jim (similar of Jerry from Tom and Jerry Kids)
- Nibbles
- Teresa
- Martin
- Cynthia
- Timmy
- Papa Mousekewitz
- Mama Mousekewitz
- Yasha Mousekewitz
- George Shrinks
- Ratigan
- Fidget
- Pinky
- Brain
- Queen Mimi
- Queen Susu
- Queen Hera
- Duchess
- Blackberry
- Luna
- Lulu Caty
- Artemis
- Nyan
- Tom
Main in the Movies:[]
- Cornelius
- Abigail
- Edgar
- Russell
- Michelle
- Phineas
- Willy
- Waggs
- Bosworth
- Marshbird
- Truck Driver
- Abigail's father
- Edgar's mother
- Russell's mother
- Bosworth's mother
- Russell's siblings
- Barn Owl