Deep Leffen Bot is an AI-powered Twitter account created by user @p_m_p_u using OpenAI’s GPT-2, specifically trained on the tweets of professional Super Smash Bros. Melee player Leffen. Since its debut in 2020, the bot has gained a cult following for producing tweets that perfectly mimic Leffen's assertive tone while outputting completely nonsensical, surreal, or existential statements about the competitive gaming scene. It has become a staple of the Smash community, representing the 'logical extreme' of top-player salt and complex technical discourse. Fans use the template to create mock tweets that blend high-level gaming terminology with absurd humor.