Darkest Fears (ダークフィアース Dāku Fiāsu , lit. "Dark Fears") is a style that appears in Kingdom Hearts 3D: Dream Drop Distance. It allows the user to attack enemies with dark claws.
Darkest Fears is a Link Style, during which Riku grows claws of darkness on his hands and feet with which he attacks enemies, dealing dark-type damage. Its combo consists of Riku slashing forwards with his hands, an upwards kick, more slashes, and finally a rushing charge.