Well, usually it involves showing them kindness and setting clear boundaries. Sometimes, it might also require getting them involved in positive activities to change their behavior.
First off, give the bully some challenges to overcome that force them to learn and grow. Also, show positive role models for them to look up to. Another thing is to have them face situations where kindness and understanding lead to better outcomes.
You can start by giving the bully character clear goals and challenges to overcome. Maybe have them face consequences for their actions and gradually learn from them.
First, establish a routine for training. Set short, frequent sessions. Use toys to make it fun. Also, socialize your puppy early to prevent behavioral issues. Consistency is key!