Holly Hobbie is the protagonist in the Holly Hobbie and Friends series.
- In the first four shows, she was voiced by Alyson Stoner, who also voices Isabella in Phineas & Ferb and Kairi in Kingdom Hearts. In the last two, she was voiced by Nicole Bouma.
- Holly and the other Hey Girls will join Barney and his backyard gang in future adventures.
- She has a bit of a crush on Ferb Fletcher.
- Holly will join Barney and friends in Barney, Holly Hobbie and Friends: Surprise Party.