[1] He was the CFO of Erlus AG, Germany’s largest roof tile manufacturer,[2] and died in a fight which resulted from Brunner trying to protect a group of school children from attacks by teenagers.
After receiving his Abitur in Landshut, Brunner studied law at the University of Munich and worked in office positions in San Francisco and Paris.
In the 1990s, Brunner trained in kickboxing at Boxclub Straubing, but gave up the hobby after he noticed more and more young men arriving at the club to learn how to beat others.
[3] On 12 September 2009, four school children were being threatened on a Munich S-Bahn train by two older teenagers, Markus Schiller and Sebastian Leibinger,[4] who tried to rob and mug them.
[7] The court pronounced judgement on 6 September 2010: Schiller, who had by then turned 19, was sentenced to 9 years and 10 months in a youth facility as a primary accomplice in an attempted robbery with violence leading to murder; Leibinger was sentenced to 7 years in a youth facility as a primary accomplice in an attempted robbery with violence leading to grievous bodily harm resulting in death.