Darkgnaw

Dark Biter (ダークバイター) is one of four Keyblades that are unique to Terra in the prequel Kingdom Hearts Birth by Sleep. Terra obtains the Dark Biter after successfully defeating the Mimic Master in the Mirage Arena.

Design
The Dark Biter's shaft has a deep-grey edge which curves in at intervals, the inside fading from dark red to black from its base, which has several angled lines pointing toward the guard as the center bears a bright red line, stretching to the tip as it leads to an equally red rune marking. The teeth are axe-like, with the same coloration as the top of the shaft, an angled piece and several lines cut out, giving the illusion of teeth. The guard is a dark steel blue and has a hexagonal shape with numerous semicircles imprinted around it. The hilt is plain black. The Keychain bears a strong resemblance to the one on Master Xehanort's Keyblade.