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Dr. Kenneth Humphries is a fictional character portrayed by William Friedkin in the TV series The Simpsons.
In the first episode they appeared in, titled Treehouse of Horror XXVIII (season 29), they were 82 years old.
They appear in 1 episodes out of a total of 768 aired so far

Dr. Kenneth Humphries

by William Friedkin

character

Episodes1

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    Treehouse of Horror XXVIII
    episode S29.E4 october 2017
    Maggie gets possessed by a demon; Lisa discovers a creepy/perfect version of her family in an alternative universe; Homer cannibalizes himself.