Castlevania: Legacy of Darkness is an action-adventure platforming video game, that was developed and published by Konami for the Nintendo 64.

Set in the year 1844, the game stars the man-beast Cornell in his quest to prevent his adoptive sister, Ada, from being used as a sacrifice to resurrect Dracula. The game opens as Cornell arrives at his village, which has been burned to the ground by Dracula's minions. He finds Ada's pendant in a doorway and follows her scent to Dracula's castle.

During the course of the game, Cornell comes upon a grand estate owned by the Oldrey family: J.A. Oldrey, the master of the Villa, Mary, his wife, and Henry, their son. Gilles de Rais and Actrise have turned Oldrey Senior into a vampire. At Mary's request, Cornell guides Henry to safety. Later in life, Henry returns to Castlevania to save kidnapped children.

Throughout the game, Cornell encounters his rival and fellow man-beast, Ortega. Ortega has allied himself with Dracula to finally beat Cornell in combat, turning into a chimera like creature. They eventually battle near the end of the game, just before Cornell defeats Dracula and saves his sister. He only accomplishes the latter by sacrificing his man-wolf powers. Unbeknownst to the hero, acquiring this power was the true aim of the dark forces, as it was the perfect sacrifice (not Ada, as Cornell had assumed) to resurrect Dracula at his full power.