Billy Fitzgibbons is a minor antagonist in The Secret of NIMH. He is the son of Farmer Paul Fitzgibbons and his wife, Beth. He is shown when he catches a naked Mrs. Brisby in a basket and tells his mother not to let Dragon in yet. He asks his mother for permission to keep her, but the former refuses and tells him to put "it" outside. He asks again, promising to keep her in Porgy's old cage. So, it was done. Joshua Lawerence did his voice.
Trivia[]
- Billy looks like a young version of Kay from The Sword in the Stone.
| The Secret of NIMH |
|---|
 Characters: Mrs. Brisby | The Great Owl | Jeremy | Nicodemus | Mr. Ages | Auntie Shrew | Justin | Jenner | Sullivan | Teresa Brisby | Cynthia Brisby | Martin Brisby | Timothy Brisby | Brutus | Jonathan Brisby | Farmer Paul Fitzgibbons | Mrs. Beth Fitzgibbons | Billy Fitzgibbons | Dragon | Miss Right | Jenny McBride | Cecil | Joseph Valentine | Muriel & Floyd Songs Flying Dreams | My Life and My Love | Come Make the Most of Your Life | I Will Show the World | Magic Mystery Show | Just Say Yes! | All I Had is Gone |