I don’t know anything about IGB crew. The abbreviation may mean „INGLORIOUS BASTERDS“, but also „ICH GEH BIER“ (I GO BEER) may be possible. They are from NRW, probably from the area Dortmund. I don’t have hard facts due to the members of the crew. All I have is the names of writers, which are quoted due to the pieces I found over the time. And here they are, but, as always, no guarantee of completeness and no warranty of any kind!