Blossom is the leader of the Powerpuff Girls. 

Like her red hair, Blossom is strong and determined, but she's also methodical and think things through.   Blossom doesn't run off into a situation with just her emotions ruling her. She is powerful and productive.

Although Blossom is the leader, she sees the importance of having balance in her life. She tries hard not to be all work and no play.