Train Heartnet is the main protagonist of the anime series Black Cat. Formerly known as the infamous assassin 'Black Cat' with the secret organization Chronos, Train is a skilled gunman known for his quick reflexes and deadly accuracy. After leaving Chronos, he becomes a carefree bounty hunter alongside his partner Sven Vollfied. Train is characterized by his nonchalant attitude and a strong sense of justice. Throughout the series, he transforms from a cold-hearted killer into a more empathetic individual, seeking to protect the innocent and atone for his past actions.