Tri-State-Funkin is an FNF mod and rhythm game in which a boyfriend battles Dr. Doof from the Phineas and Ferb universe.
Dr. Heinz Doofenshmirtz, also known as Professor Time, is a fictional character in the American animated television series Phineas and Ferb. Dan Povenmire and Jeff “Swampy” Marsh created him, and Povenmire voices him. Initially, he was portrayed as an inept and forgetful evil scientist intent on conquering the “entire Tri-State Area” with his obscure and nefarious inventions. Despite not being a true villain, Doofenshmirtz did have a redeeming quality. By the end of the series, his character has been redeemed because he uses his inventions for the betterment of the world and cares for his daughter Vanessa. Dr. Doofenshmirtz is from the fictitious European country of Drusselstein, and he speaks with a German accent.