How would I go about making a chatbot to “mimic” someone on discord

Hi

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I have a discord server with a group of friends where we like to chat during the day. Unfortunately, one person from this group of friends is no longer with us, and we miss their randomness and ADHD-infused monologues.

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We’d like to make a discord bot trained on his past messages to then reproduce his behavior, whether in reaction to other messages or spontaneously. Is there a way to do that ? I’m a developper, but have zero knowledge on ML and how to go about training a chatbot for this specific use case.

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Thanks for any advice you can give