Judd Birch is a supporting character in Big Mouth. He is the brother of Nick and Leah Birch, and the son of Diane and Elliot Birch.


Judd was born to Diane and Elliot Birch sometime between 1997 to 2002. Judd is known as the emo/scene kid of the Birch family. 


Judd is a tall and lean. He wears high-top natural white converse, with slightly rolled up black pants. He also wears a dark grey shirt, as well a dark red bracelet on his right wrist. His hair is black with blue highlights and he shaved the sides and back of his head.


He is known for having a dark outlook on life. He matches the emo stereotype. He does not like to spend time or socialize with anyone, he prefers to do whatver he does by himself. He is pretty negative. He does not like to specify much about himself.