The rats and mice, made intellectually superior in the original Secret of N.I.M.H., return to Thorn Valley to groom their destined leader - young Timmy Brisby.
17 Year Old Tim (voice)
Evil Martin (voice)
Jenny Mcbride (voice)
Floyd (voice)
Muriel (voice)
Justin (voice)
Jeremy (voice)
Narrator (voice)
Mr. Ages (voice)
Auntie Shrew (voice)
Young Martin (voice)
Helen (voice)
Troy (voice)
Reformed 19 Year old Martin (voice)
Professor Valentine (voice)
Brutus (voice)
Cecil (voice)
17 Year Old Tim (voice)
Evil Martin (voice)
Jenny Mcbride (voice)
Floyd (voice)
Muriel (voice)
Justin (voice)
Jeremy (voice)
Narrator (voice)
Mr. Ages (voice)
Auntie Shrew (voice)
Young Martin (voice)
Helen (voice)
Troy (voice)
Reformed 19 Year old Martin (voice)
Professor Valentine (voice)
Brutus (voice)
Cecil (voice)
