The Gardener

From the Castlevania Wiki, the Castlevania wiki

When you see the Gardener in the hedge maze, RUN. RUN RUN RUN. It'll attack ferociously with a chainsaw. It also bears a suspicious resemblance to the Frankenstein monster. Oddly enough, this image (taken from Konami's official Castlevania 64 page) is also the original design of Corler, the shotgun wielding playable character that was dropped from the game.

Also he bears a striking resemblance to Ash, the main protagonist from the Evil Dead horror movie series played by Bruce Campbell.