Season 3 Edit
Season 4 Edit
There is a Robert Mifflin Memorial Conference Room in the Dunder Mifflin Corporate Office. In the episode Dunder Mifflin Infinity Michael brings in Robert Dunder to host a meeting where he tells the story of how he and Robert Mifflin met and created Dunder Mifflin .
Season 5 Edit
In the finale episode of the season "Company Picnic", it is mentioned that he committed suicide with a gunshot to the head.