Half-bloods are individuals who have mixed heritage, typically one parent from a magical background and another from a non-magical background. In various fictional universes, such as the Harry Potter series, half-bloods often face unique challenges and discrimination due to their mixed lineage. They may possess magical abilities but are sometimes viewed with suspicion by pure-bloods. In the context of mythology and folklore, half-bloods can refer to demigods, like those in Greek mythology, who are the offspring of a god and a mortal. These characters often embody traits from both sides of their heritage, leading to complex identities and adventures.