传奇狗肖立志学会说话后并不满足，它希望能够成为一个真正的男孩，在伊万教授的帮助下，通过DNA的转变，肖立志获得了人类的思维和性格！
Nathan Lane
Spot Helperman / Scott Leadready II (voice)
Cree Summer
David Ogden Stiers
Mr. Jolly (voice)
Debra Jo Rupp
Mrs. Mary Lou Helperman
Jerry Stiller
Pretty Boy (voice)
Kevin Schon
Rob Paulsen
Shaun Fleming
Leonard Helperman (voice)
Wallace Shawn
Principal Strickler (voice)
