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)
1934 · ★ 6.3
1948 · ★ 6.9
1934 · ★ 6.4
2011 · ★ 6.7
1952 · ★ 6.4
1947 · ★ 7.1
2025 · ★ 6.7
1942 · ★ 7.1
2018 · ★ 7.0
1938 · ★ 6.2
1948 · ★ 7.1
1939 · ★ 6.4
1943 · ★ 7.3
1934 · ★ 6.6
1940 · ★ 6.5
1944 · ★ 6.8
2022 · ★ 7.2
1942 · ★ 6.7
1933 · ★ 6.7
2011 · ★ 7.3
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