|First Appearance||Doc Flew Over the Cuckoo's Nest|
|Last Appearance||Doc Flew Over the Cuckoo's Nest (Unknown)|
|Series lifespan||Doc Flew Over the Cuckoo's Nest To Present|
Nothing is known about Liddy's life prior to the outbreak except that he was a patient at the Serenity Falls Institution for the Criminally Insane.
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