J

J is the third letter and additional party member Gregg encounters. He is found lost in the Great Ice Maze.

Gregg
As with all of the other letters, J becomes loyal to Gregg despite making questionable remarks towards him sometimes.

P
P and J are presumably on good terms, both being letters.

B
B and J are old friends from high school. B is the reason J joins the party.

Fate
If the world is destroyed in Take a Fucking Bath 2, J, along with the rest of the world, will be phased out of existence.

Trivia

 * Same as P and B, J's font is Elephant.

Unused/Scrapped Content

 * Originally, J, along with P and B, was going to sacrifice himself and merge with the other two letters to perform a Peanut Butter and Jelly sandwich (hence P, B & J) in the battle against the Valve. This is where Telltale's Game of Thrones' song Two Brothers was going to play, and why it appears in the credits and game files.