P

P is the first letter and additional party member Gregg meets in his quest, being chased by a Bath Plug. Gregg helps him out, and as more plugs show up, P joins Gregg.

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

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

B
B is P's brother, and the two bond over anti-racism.

J
J and P are friends but do not interact much.

Unused/Scrapped Content

 * Originally, P, along with B and J, 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.