How to create charactor like the game "Party Animals" & "Human Fall Flat" & “Gang Beasts”?

how to create charactor like the game “Party Animals” & “Human Fall Flat” & “Gang Beasts”?
https://www.youtube.com/watch?v=efMD0Kjx8RE
https://www.youtube.com/watch?v=zjkc4pR5rTI
https://www.youtube.com/watch?v=DXv6-m7PEfE
thanks!

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