Quackityity Stories

Quackity meets his old friends in hopes of putting their past arguments behind them, but Karl's deteriorating mind refuses to cooperate. Who is this man to Karl? And why can't Karl's memory just work for once? Based on Quackity's lore stream where he met Sapnap and Karl in Kinoko, this is my own take on the situation. (This is a repost from my AO3 account)