hey so I didn't find who makes louis' shirt but I found what font it is written in. It's called "Mars Attack" www(.)fontspace(.)com/filmfonts/mars-attack
(I hope you don’t mind that I’m publishing this)
THANK YOU!!! I couldn’t figure out what to call the font! It was reminding me of like dripping blood and old school horror movies but oh my god yes Mars Attacks that makes so much sense!
Thank you so much!!!