I played a whole run through of the mod up until The mechanical bosses. Got many mod items not really thinking anything of it, but then i started needing things like Z-Souls. Upon doing research i found out that my worlds don't generate any DBZ enemies, the NPC that sells them never spawns, so i can never fight any of the DBZ bosses. Changed versions, made new worlds, redownloaded the mod. Very unsure why this is happening.