Atomic Steiff (real name: Guido Richter) was drummer in German thrashers Sodom from 1992-1996. He joined the group replacing Chris Witchhunter (real name: Christian Dudeck), and left after four years of service. Richter was followed up by Bobby Schottkowski.
Guido Richter currently plays drums with Stahlträger. He has previously played with Assassin, Sacred Chao, Holy Moses, Living Death, and Violent Force.
Guido Richter/ Atomic Steiff rejoined Holy Moses in February 2007, following the departure of previous drummer Asgard Niels.