Hi, thanks for your questions.
The main character isn't included in this pack; they only appear on the cover image for purely aesthetic purposes. To have the main character, you need the main pack. The others packs are just add-ons that add new levels and enemies.
As for the animations: Most enemies only have walking, idle, or, in some cases, jumping animations. For enemies, there is only one defeated/dead sprite frame. Some specific enemies have a rolling animation. Other specific enemies can spawn projectiles but do not have a specific animation for that.
I’m available for further clarification or questions.