This man is more urban legend then anything else, The Founder has never been actually seen, he has only ever been heard through antiquated radio transmissions. As the legend states he is the CEO of DAOD (Dark Arms Ordinance Distribution) hence where his name comes from The Founder I guess only the higher ups in the Deaths Hand will know anything about the Founder and they are not talking.
The other part of his legend is that he captures shadowrunners and gang members to be his test subjects, he sends them into a crazy labyrinth, A deadly maze of traps. That if the subject survives they are rewarded, and their death is the price of failure. Though this sounds a lot like the Tobias (Jigsaw) of the HRM, so I feel that maybe there might be a bit of confusion in the stories here.
Anyone with any actual valid information about the Founders actual existence please contact me here.