You're lucky, he looks very much like a person you could laugh at. I don't want to post links (pictures of his face alone I find on google are all from very questionable websites...) but his name is Stephan Balliet, you can look him up.

And because even though I post his name, the victims are way more important than him:

Jana, 40 years old, was the first victim. The man in the shop was Kevin, only 20 years old. He was a painter working on a construction site nearby and taking a break.