Matthew MacDell is one of the main characters in Big Mouth. He is the only openly character in Season 1 whose shtick seems to be appearing from off-screen (or being cut to) and injecting an appropriate quip related to the current conversation, and later on in Season 3 and 4, he would become a more detailed and developed character. He is voiced by Andrew Rannells.

You can be Jay Bilzerian or Aiden