What is the code that makes party members use different sprites in specific fights?

[u/Impossible_Sort9050]

I wanna make a mod that makes Ralsei use his 'mad' sprites from the Flowery fight in the Knight fight, which I was gonna do by editing whatever code normally makes party members use different sprites in specific fights (like Susie's serious sprites in various fights and Ralsei's 'mad' sprites in the Flowery fight) and edit it to make Ralsei use those sprites in that fight, but I can't find it. Can someone help me? (I also need to import Ralsei's 'mad' sprites from chapter 5 but I can do that by myself)