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+---- Thread: Doom: Eternal - Markiplier's Dad's Book (/thread-4733.html)
Doom: Eternal - Markiplier's Dad's Book - Tuli0hWut - 01-07-2022
On the bookshelf located in the Fortress of Doom, there is a book titled, "How to Comb your Mustache", by Cliffton M. Fischbach, who was the father of Youtuber Markiplier who sadly passed away due to lung cancer. The developers included his name as an easter egg in the game because Mark stated that his father got him into the very first game in the series.
Who is Markiplier's dad? Here's more information about the popular Youtuber (republicworld.com)
(16:21 mark)