I think that D is more powerful than alucard, d might not be able to kill him but i think that his left hand can obsorb him (i dont know how canon that is i have only read the 3rd book and just started the first) and also technicaly this is an illigal thread cuz vampire hunter d was not orriginaly a manga or anime it was simply a book but thats close enough to a manga and they did make it into a manga so oh well
ALUCARD is Omnipresence: he exists everywhere in the omniverse. This grants him the ability to exist everywhere and nowhere if he wishes to. He can also exist in infinite places at once using this power, and he can appear in astral realms (being physically present in a person's mind for example). It also makes him completely immortal; He in the past of future. In your mind or in reality. In all dimensions and Memories. In every machine, game, program, picture, painting, Site, video, videotape ect. He can clone himself an infinite amount of times. He can wield himself back into existence. This gives him unlimited telepathy. He can see the future and the past. It gives him unlimited teleportation. He can become completely invisible. He can even become invisible for one person and visible for someone else. He is the inbodyment of every particle in existence and none existence. He can heal immediately, no regeneration. He has to think he is unharmed and he is unharmed. He had to think he is truly invulnerable and he is truly invulnerable.
* Being a single, timeless "everything". The ability to be absolutely everything, every aspect of reality, every thing organic and inorganic every dimension/ universe in one. The user is absolutely everything: every single of infinite possibilities and probability, every of infinite reality, timeline, universe or dimension and everything within each of, i.e. absolutely all at once, no exceptions and limitations, all embodied in a single being. Alucard is able to exist in every parallel universe or parallel time line having absolute existence in everyparallel universe the user may have copies of themselves in every parallel universe. This grants them unlimited knowledge, and existence, for the very concept of limits are now irrelevant.
* Alucard cannot be absorbed, sealed, consumed, banished, imprisoned or affected by any type of storage power. In some cases users are too big to be contained others can just cause indigestion or overloading. Alucard can gain access or entry to any location, place or time. They can easily gain access to places that are spatiocked, temporal locked, spatial-temporal locked, isolated and omnilocked locations. It doesn't matter where or what the location is, they can always find a way inside.
* Users are able to manipulate the boundary between fantasy and reality turning one into the other and blurring the border between them. It allows users to bring anything into existence, even if it's impossible, fantasies care little about reality's limitations. Fantasies can be brought to life as independent existences, or infused into reality in more subtle ways. Users can also turn aspects of reality into fantasies, making them vanish as having never existed. By combining these two aspects, they can remodel existing things to their liking, or replace them with something entirely new. When using these capabilities at full power, the border between fantasy and reality becomes not existing. The affected area is no longer bound to reality and instead becomes an extension of the user's soul, a place where fantasy and reality are one and the same. In this impossible realm, unbounded by any rule, anything is possible, and things like "Heaven" and "Hell" are no longer just metaphysical concepts.
* He is simultaneously both intangible and tangible, being able to attack or make physical contact with his target while his target cannot touch nor attack him even while Alucard is making physical contact. He can also pass through soiled objects and objects can pass through him.
* He can attack you no mater were you are. He can attack infinite places at once. Or attack you an infinite amount of times at one place. (Infinite punches with infinite power) he can attack you mind with infinite minds and infinite power.
* He can even surmount the five powers of Jesus Christ himself. Time, creation, death, truth and destiny.
* Not bound by time and space. Even someone how is 10 dimensional to can't wipe him from existence. Only a being with true omnipotent and unity power can kill him permanently. He himself said I'm everywhere and nowhere. I'm means at that moment. So yes he is omnipresent. I think D is Far more powerful in all physical ways but he can't kill/absorb Alucard and in the end, Alucard can mindrape D with ease.