Who are the main characters in heartland?

The main characters in "Heartland" include Amy Fleming, a young girl with a unique ability to heal horses; her sister Lou Fleming, who helps manage the family ranch; and their grandfather, Jack Bartlett, who provides wisdom and support. Other key characters include Ty Borden, Amy's love interest and a skilled horse trainer, and various friends and family members who contribute to the show's themes of healing and growth. Together, they navigate challenges related to horses, family, and personal development on their ranch in Alberta, Canada.