Jacob Thrombey

Jacob Thrombey, played by Jaeden Martell, is the son of Walt and Donna Thrombey. He is characterized as an "alt-right troll dipshit" teenager, his uncle Richard Drysdale said of him "He is literally a Nazi".

Biography
Jacob spent the majority of the night of his grandfather's 85th birthday party in the bathroom next to Harlan's office. During his time, he overheard part of Harlan and Ransom's argument.

Personality
Jacob's characterization is meant to serve as a tongue-in-cheek mockery of the internet trolls that expressed hate towarrds Rian Johnson after he directed 2017's ''Star Wars The Last Jedi. ''He is a whiney, alt-right, troll who spends most of the film expressing hate comments on his phone. His only legit contributions to the importance of the story is when he was in the bathroom overhearing Harlan and Ransom through the air vents saying "My Will" and "I'm Warning You". This lack of any contribution to what's important is obviously intentional as its part of his one-joke character.

Trivia

 * Jacob is an obvious reference to internet trolls, showing Johnson is not at all apologetic for what his choices in The Last Jedi and decides to mock the ridiculous reactions of online haters.