The "Half-Blood Prince" is a self-given nickname of Severus Snape, a key character in the Harry Potter series. Snape chose this name during his time as a student at Hogwarts. The "Half-Blood" part refers to his mixed magical heritage: his mother, Eileen Prince, was a witch, and his father, Tobias Snape, was a Muggle (non-magical person). The "Prince" part comes from his mother's maiden name, which he used to create this secret identity
. This alias reflected Snape's complex identity and his desire to embrace his magical lineage while distancing himself from his Muggle father. The nickname also carried an ironic undertone, as Snape later became a Death Eater, a group that typically valued pure-blood wizards over half-bloods. The "Half-Blood Prince" persona was revealed in the sixth book, "Harry Potter and the Half- Blood Prince," when Harry Potter discovers Snape's old potions textbook filled with clever spells and annotations signed with this name
