Yes. Pulp Fiction took home the Palme d'Or. The film's bold and unconventional approach to storytelling and its ensemble cast likely contributed to its success in winning this prestigious award.
I think Murdoc would win. He has a more aggressive and dominant personality. He's used to getting his way and not afraid to use force. 2D is more of a gentle soul. Even if he fought back, he might not be as ruthless as Murdoc. Murdoc also has more experience in getting into fights and dealing with difficult situations, so he would likely overpower 2D.
Toge Inumaki is important too. His special cursed speech ability makes him stand out. Also, the principal of the school, Masamichi Yaga, is likely to be important as he is in a position of authority and has an influence on Gojo and the other students. There could be other characters like the members of different clans that also play roles in the complex web of the story.