He began studying law at the Ludwig-Maximilians-Universität in Munich but quit his studies after a short time and founded the "Münchner Hinterhoftheater" (Munich back alley theater) with some friends in 1980, where he started as a Kabarett artist and actor.

[5] In 1983, Austrian Kabarett artist Werner Schneyder invited Fischer to his television show Meine Gäste und ich.

[4] In 1990, Fischer was on Mitternachtsspitzen with Richard Rogler and since 1995 he is the host of Ottis Schlachthof, a show dedicated to interviewing solo Kabarett artists and giving a platform to newcomers.

[4] In 1993, Fischer acted alongside Wolfgang Fierek in Ein Bayer auf Rügen.

From 1999 to 2005, he starred in Der Pfundskerl and since 2003 he is the lead actor in Pfarrer Braun, a series loosely based on Father Brown.