The Freak Chip is used in the hellsing series to implanet humans who have not been turned by a vampire. It then gives them powers simular to a vampire and in some cases even more powerful skills then expected.
The freak chip was created by millennium'sDoctor after years of hiding in Brazil they finally got the chips to work, The chips empower the user to become like vampires. They will never tire and will have amazing stamina and in some case they can revert the aging process and give the user special talents or heighten talents they already have. The chip has been used to create the last battalion that stormed London and fought the last of the catholic churches armies, It was Also used at full power on Walter C.Donez reverting him back to a younger age and giving him the power to go toe to toe with Alucard.