The Bit Sniper (ビットスナイパー Bitto Sunaipā ) is a Pureblood Heartless found in Kingdom Hearts. It only appears during the final battle with Ansem and the World of Chaos, and so does not have a journal entry.
Strategy
The Bit Sniper is largely ignorable during the last fight with Ansem, but if it's giving you trouble with its lasers, or you just want HP, it can be defeated in a few quick strikes of the Keyblade. Its lasers can stagger Sora, so if you're close to death, try to fly somewhat erratically to avoid them, but they are very weak, so if you have a lot of HP, just charge in and kill them.