Dewey Donedidit

Dewey Donedidit is a television show producer & the main antagonist of Jeffy's TV Show!. He saw Rosalina's video about Jeffy and adored it. He wanted to make a reality show featuring them, and got Mario to sign a contract and said he will get $15,000 but he says to Mario after he gets kicked out from the show that under the line that says he will get $15,000 but he actually won't. He ended up replacing Mario, Rosalina, and Jeffy, and changed various minor things, and left Mario with a bullet wound and his mustache shaved.

Reception
Dewey Donedidit was extremely panned by fans who criticized his annoying and tedious behaviour towards Mario, Jeffy and Rosalina. He was also criticized for he portrayed the critics who criticized modern SuperMarioLogan for how unlikeable it was.

Triva

 * He was confirmed to be 23 on an Instagram post.

Poll
Do you like Dewy Donedidit? Yes! No. Kind of.