E V Debs : OG American Socialist

https://en.wikipedia.org/wiki/Eugene_V._Debs

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Maynard G Krebs : parody sitcom character on 'The Many Loves of Dobie Gillis'

https://en.wikipedia.org/wiki/Maynard_G._Krebs

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Norville 'Shaggy' Rogers : based on the sitcom character

https://en.wikipedia.org/wiki/Shaggy_Rogers