Dracula as seen in Castlevania. Particularly if he is at his strongest.
In Castlevania: Bloodlines both Death and Dracula can create a large amount of dimensions, Dracula's being filled with celestial bodies (the entire screen is chock full of stars):
https://youtu.be/UAq_AH8BGfE?t=2m50s
Galamoth crashes into the moon, disperses it, and grows to the size of the moon. Which you should be able to scale Dracula as he routinely defeats the usurper, and his son Kid Dracula shoots a fireball at FTL speeds and harms Galamoth with it:
https://youtu.be/c8Icd0u6p0w?t=24s
For reference, the Abyss is yet another component of the castle and it's also an explicit universe. As seen in Dawn of Sorrow.
https://i.imgur.com/79I9QkB.png
https://i.imgur.com/zm7Covp.png
Dracula is noted to have a direct to connection the Abyss.
CELIA: Excuse me. Welcome to the headquarters of my religious community.
SOMA: You say that as if I wanted to come.
CELIA: You're afraid of having people involved because of you. Am I right?
SOMA: Yeah.... I've taken the bait. Why do you want a demon king?
CELIA: It's not that I want a demon king. In order for god to be completely good, a being of complete evil is lacking.
SOMA: That has nothing to do with me. If the world wants complete evil, the demon king will someday appear. Isn't that right?
CELIA: That may be true. Or it may not be true. But in fact, the power of the demon world is getting weaker. A demon king must definitely be made. And soon.
So, basically the direct translation of Dark Lord is Demon King and the Abyss is the Demon World.
Dracula, no longer being the Dark Lord or Demon King, has caused it to weaken. It would eventually disappear without him.
As we already know there is the Chaotic Realm as well. Which is another component of the castle, and has numerous stars and galaxies. As seen in Aria of Sorrow. There are several of those rooms in the Chaotic Realm.
https://i.imgur.com/QEvcYXJ.png
Specifically, there are four of them and two dimensions with moons. The ones with stars, and galaxies have them being thrown around like frisbees by Chaos.
https://youtu.be/rFrLQYqvDCQ
As you can see at these time-frames.
0:22+
1:28+
1:33+
2:10+
2:14+
Then the Chaotic Realm being destroyed after Soma Cruz defeats Chaos leaving only a white void before disappearing. Soma Cruz survives the destruction without so much as a scratch.
https://youtu.be/9Eu1i-X2LFE?t=3m34s
Then the nine dimensions separated from the castle by Brauner in Portrait of Ruin each with celestial bodies.
https://youtu.be/fhGP2k0ZNlE?t=8m2s
Charlotte: This painting... Its power is incredible!
Jonathan: Must be one of those paintings...
Charlotte: Without a doubt. Hm... I've got it!
Jonathan: Care to share?
Charlotte: This paintings function. Brauner is using it to
control the power of this castle!
Jonathan: Well then, let's hurry up and rip it to shreds!
Charlotte: Impossible. Anything we do will be pointless. From what I can tell, based on the theory of curse amplification, this picture is a multilayer quantum-space barrier. A kind of paranormal phenomenon.
Jonathan: Uh, okay... And what does that mean in human language?
Charlotte: ... In short, think of it as a series of walls that surround the magic controlling Dracula's Castle. The painting itself is just the outermost wall. As soon as you break it, it'll regenerate. It's unbreakable.
Jonathan: How convenient. So now what?
Charlotte: I'll align my magic with the painting's so we can enter it. That'll be the best way to circumvent the castle's magic. the risk is quite high though.
Jonathan: No problem. C'mon, what do we have to lose?
Charlotte: Okay then. Here we go.
(Jonathan and Charlotte enter the painting)
Jonathan: So we're in the painting now?
Charlotte: The will of the artist is embodied here.
Also, more confirmation when talking with Wind earlier.
Wind: Now you should be able to advance deeper into the castle. If you complete the tasks I give to you, I shall teach you even more, including magic skills. I may be able to entrust you with other items in the future as well.
Jonathan: Sounds good to me.
Wind: Oh, one more thing... Regarding this castle's lord.
Charlotte: You mean Dracula right? I've read books about him.
Wind: Dracula isn't this castle's lord.
Jonathan: What do you mean? That's why they call this "Dracula's Castle".
Wind: It is indeed Dracula's Castle. However, the castle's lord is a vampire by the name of Brauner.
Charlotte: I've heard nothing about that!
Wind: As one would expect. His identity has been kept secret for years, after all. He infuses magic into paintings to increase his power. You will undoubtedly come across these paintings in this castle. Search for these paintings.
Charlotte: He's using the paintings to make the castle's power his, isn't he? Still, he isn't Dracula, after all, so we're safe for now.
Wind: Be careful. His power grows stronger by the minute.
Jonathan: No problem. We won't let you be tied down here for long. That's a promise.
Charlotte: Trust us. Jonathan might seem unreliable, but he'd never break a promise.
Wind: Heh, that's reassuring. Very well. Best of luck to you.
Jonathan: All right then. Let's go find those paintings!
A screen-capture of one such dimension.
Also, here is another.
The castle was divided in half in Harmony of Dissonance, and the only thing stopping Dracula from fusing them back together was Maxim's spirit. Which he needed to expel before he could finish fusing the castles, and resurrect himself. Which is impressive as the castle consists of multiple universes:
https://youtu.be/0JGq2Nb1lqo?t=20s
Another thing of note is that the castle has an infinite amount of zombies and monsters. Which means that it can't possibly be finite.
Taken from
Reminiscence of the Divine Abyss. It was written under supervision from Koji Igarashi.
Michelle had promised herself to use Julius’, Yoko’s and other predecessors’ quest records as a source of information to improve her knowledge on those things.
As a start, the castle has an infinite supply of zombies and drawn by the castle’s magic, numerous other monsters appeared, perhaps their existence is allowed by a part of the magic that governs the original Dracula’s castle.
Perhaps, people who sought to resurrect Dracula had called upon those countless monsters.
Soma Cruz and Alucard resisting Chaos's influence. Here is the scene outright, and Chaos is responsible for creating the infinite demons in the castle from the tortured spirits from the Abyss.
https://youtu.be/V4f9L_CFzEE?t=2m32s
Also, Death is able to kill things like "distance" and "sound." Olrox can dodge these attacks that destroy the concept of distance.
Two bronze colored scythes much larger than usual appeared; it advanced to the space in between the two men with an intention to cut off Olrox’s head.
Kill the distance-----
Kill the sound-----
Just, faster, soon, die.
It can be seen that the blades have certainly caught Olrox’s neck, but----- that is only an after image and the vampire is already at Death’s back.
Soma Cruz, and Dracula are the same person. The former even having the latter's memories. Soma Cruz erased Death from existence with the power of dominance. Death was able to regenerate from being erased from existence.
Dracula died in battle in 1999. That is the truth.
However----- his soul did not sink into chaos. Instead of losing the memory of his past self, he was reincarnated as a human being with the power of dominance over monsters.
That is the existence of Soma Cruz.
If in essence, he is the new Dracula, he should have reigned over the castle but with the help of the vampire hunters’ Genya Arikado, Julius Belmont and Yoko Belnades, as well as the previously mentioned childhood friend, his connection to chaos was severed.
Afterwards, due to his [power of dominance], he got involved in trouble but now he is sticking to living as a human being.
But his soul had scanned the past and even he cannot forgive that.
While deciding to prepare himself, Soma again concentrated on his surroundings.
-----This sign……from where……
This ominous vortex of magic was similar to what he felt in the [demon castle]. Among all the magic Soma knows, this particular type of sophisticated [power] belonged to-----
“……I know I am being rude……”
Faster than he can remember, that husky voice rang in front of Soma-----
From the shadow of the forest, a large shadow emerged.
“……tch!”
When he grasped the identity of the shadow, tension ran throughout Soma’s body.
A giant skull wearing deep blue rotten robes appeared. However, there was no sense of madness and savagery. Even the atmosphere was filled with an indication of intelligence.
“Impossible…… why here…… tch!”
Death
Formerly this diabolical being with immeasurable power stood in Soma’s way twice.
Except for the time when he was able to erase Death from existence by possessing Dracula’s [power of dominance] over the souls of monsters, his condition right now with his disregarded power and not even having a weapon was no match for his enemy.