I'd chose to be a Hellsing Vampire...specifically by the name of Alucard.
Alucard demonstrates, in various incarnations of the series Hellsing, an astonishing and overwhelming range of supernatural attacks; these include, but are probably not limited to:* Immortality: (which was assumed to be associated with how many souls he has absorbed, though it was merely fan theory, and was never proven and or even hinted at. It was proven wrong when Anderson attacked Alucard when all of his souls were released, and he was still able to regenerate perfectly fine).
* Regeneration: Alucard's ability to regenerate is considerably greater than any other vampire's, and may be due to the Hellsing family's experimentation. He has regenerated from a pool of blood and from being blown to shreds by gunfire, incinerated completely, etc.
* Superhuman Senses
* Superhuman Accuracy: Alucard has been known to hit targets at great range using handguns while looking the other way. He does this by using his so called 'third eye'. He states that "if you shoot like humans do, you'll only miss like they do.".
* Superhuman Strength: The extent is unknown, but Alucard can physically rip humans and vampires apart with ease. He also ripped through Tubalcain Alhambra's card which was strong and dense enough to slice through uranium.
* Superhuman Speed: He can move faster than can be seen, and is faster than Mach Speed. He caught a magic bullet within his mouth [which tore through an SR-71 (which is made of multiple alloys, including VARIOUS amounts of titanium) and crushed it within his teeth].
* Intangibility: The ability to pass through solid objects.
* Superhuman Agility: The ability to defy gravity to an uncertain limit. He is also seen leaping impossible distances and can go up vertical surfaces.
* Shadow Manipulation: Manipulation of shadows into physical form. (Although vampires controlling shadows isn't unheard of, the artwork sometimes makes it difficult to distinguish between blood and shadows.)
* Shape-shifting: Alucard can transform himself or parts of himself into bats, insects, snakes, hellhounds, other human forms including a little girl, an amorphous mass of darkness, and many other forms. Alucard has four known human forms, each with different characteristics and weapons. He also states that his form means nothing and that he can take any form that he chooses.
* Weather Control: The ability to control the weather to an unknown limit, as demonstrated by the fog created when he returned to London aboard the H.M.S Eagle.
* Teleportation
* Telekinesis: In the manga, Alucard is seen telekinetically moving a broken down air-craft carrier from the Gulf of Italy to the Dover of London all in a little less than 40 minutes, only traveling at a few knots.
* Telepathy: Alucard can speak telepathically to his fledgling.
* Mind Reading
* Mind Control and Hypnosis: (fans sometimes call it the "sex beam" after a remark from Pip).
* Summoning: The ability to summon familiars, the souls of those whose blood he has sucked in a variety of forms that either sprout from his body or swarm about him as an army numbering in the thousands. These familiars can also include animals such as horses and the weapons and abilities that the familiars possessed in life, but Alucard can only use this ability when control art restriction system level zero is released.
* Blood Sucking: The ability to suck a person's blood and absorb their soul and, consequently, their knowledge and memories. (He learns more about Millennium after absorbing Tubalcain.) He can also absorb blood through his clothes and skin, as he does with Luke Valentine's blood after his hellhound had eaten Luke's body.
* Hibernation: Alucard is able to survive long periods of time without consuming blood, but is able to fight at a usual level of strength after drinking blood.
* Immunity to the weaknesses most vampires possess. His abilities and health are not in any way compromised by such things as sunlight or silver. In fact, it appears that the only weapons capable of harming him to any real extent are the most holy of Christian artifacts, such as Father Anderson after augmenting his abilities with Helena's Nail (a nail which was from the True Cross which crucified Jesus Christ and was blessed in his blood).
* 'Supernatural Sense': The ability to sense supernatural activity (In The Dawn, a prequel to Hellsing. Alucard knew the Captain was a werewolf the moment he saw him, and in the OVA, could see the blessings on Father Anderson's bayonets).
* Combat Experience: In addition to his superhuman abilities, Alucard also possess centuries of combat experience. While he usually relies on crushing his opponents with sheer power, he does at times use strategy. When he fought Alhambra, Alucard used shadow duplicates to distract him, allowing Alucard to close the distance between them and deliver the death blow.
* While regenerating he gains a great immunity to anything that tries attacking him, leaving it non-effective.
While not directly confirmed, it appears that Alucard has acquired Schrodinger's quantum reality manipulation powers after absorbing him during the Millennium incident. This would grant him the ability to exist wherever and however he wishes, although it took him 30 years to be able to use this apparent power due to the complex nature of it.