Ola Rapace is the only surviving adult cast member from the original film to not reprise his role, which was recast. According to Lukas Moodysson, the recasting was mandated by the studio.
With the exception of the children (who were deliberately left out of the script because Lukas Moodysson didn't want to depict a generational conflict), Rolf is the only character from the original film who doesn't appear in the sequel, owing to actor Michael Nyqvist's death in 2017.