|Birth name||Zachary James Sherwin|
|Nickname(s)||MC Mr. Napkins (formerly)|
|Appeared In||Albert Einstein vs Stephen Hawking|
Doc Brown vs Doctor Who
Batman vs Sherlock Holmes
Nelson, Mark, Steven and Lucas
Zachery James "Zach" Sherwin (Formerly known as MC Mr. Napkins) is a YouTuber who has appeared in three ERBs to date. He has also helped write the ERBs with Nice Peter and Lloyd Ahlquist after the episode he first appeared in, including Doc Brown vs Doctor Who and Batman vs Sherlock Holmes. He also appeared as a guest rapper in Dis Raps For Hire 13.
- Every battle he's been in features some kind of doctor (medicine, philosophy and the like).
- All of Zach's main opponents were played by Nice Peter, or at least partly: Stephen Hawking, Doctor Who and Batman.
- Zach has also portrayed only intelligent people so far (Einstein, Doc Brown, and Sherlock Holmes).
- He has had the most guest appearances out of all other guests.
- Each of his characters have had different accents. Einstein had a German accent, Brown had an American accent, and Holmes had a British accent.
- He and George Watsky, so far, are the only guest stars to have a rapping role in more than 1 season.
- Although he has the most guest rapping roles.
- He is the first guest rapper in Dis Raps For Hire.
- In a recent video, he said he's quitting the stage name "MC Mr. Napkins" and just keeping him known as simply Zach Sherwin.