Loopy unknowingly befriends a scientist who turns into a monster on and off without Loopy knowing that the monster is really him.
Daws Butler
Loopy De Loop (voice)
Hal Smith
Elderly Woman / Mr. Hyde (voice)
Don Messick
Car Owner / Dr. Jekyll (voice)
1948
1947
1946
2011
2025
2018
2017
1937
1943
1942
1958
2022
2019
1945
2012
2004
2015
2013
1939
