I'm glad to know finally the characters fit your project :)
As for your question, there are a lot of animations only available for the base humanoid races: human, elf, orc, halfling, goblin and dwarf (the naked versions you can find in Minifantasy - Creatures). Some of these expanded animations for the base characters are the ones in Weapons, Magic And Sorcery or the Crafting And Professions packs. I often introduce new animations for these 6 humanoid characters in new asset packs.
If you want the heroes or other creatures to be able to cast additional spells, use the fishing rod, or attack with different weapons, you will need to make some edits yourself using one of the base humanoids as a template.
Minifantasy is an ever-growing asset collection that keeps adding new stuff every month, the increasing amount of animations for the base characters makes it impossible to have those additional animations also available for special characters and other creatures in the collection (right now we have over 100 different creatures between the ones in the assets packs and the ones in the Patreon archive, and counting). I would need to retrospectively update every character to include an always-increasing number of new animations, which would lead me to invest all my time in updating the already existing creatures instead of making new content for the collection. so I'm afraid this is the downside trade-off in exchange for having such an expansive collection.
I'm sorry for the inconvenience it may cause 🙏