My home, heaven and hell

It turns out to be Undertaker. But this isn't Undertaker from the Weston arc or something. No, it's him from decades ago, probably soon after he had left the reaper organization. Either he got his scars from the fight at the reaper HQ, or perhaps it was during a battle against some demon? But a few things are clear to me now, particularly after a discussion here in my DM's.

If you look closely at the scar on his face... you might see that that's not even a scar; it's relatively fresh wounds that have been stitched. And there's a bandage going across his left eye, likely because the wound on his face does go across that left eye. Also note he's wearing a suit and tie... but that's not the Eldridge knot from Weston. Either this scene occurs not long after he'd finally escaped from the reaper HQ, or he got these injuries from an encounter with a demon.

Undertaker must have collected Modri's body decades earlier and just kept him in stasis or suspended animation in one of these special coffins until his techniques were finally "up to snuff" to make him a bizarre doll. Why he would keep a corpse like Modri's long before collecting real Ciel's body might simply lie in those cinematic records. It's probably rare that Undertaker finds a human being with cinematic records showing that he was an experienced demon hunter. Surely, he would come in handy. Modri's fickleness might have also sparked Undertaker's interest, since that might make him easier to manipulate.

Anyway, Modri finally awakens to find himself lying in a fluid-filled coffin and hooked up to equipment. He's greeted by modern era (more current timeline) Undertaker, once Undertaker has the necessary technology to make very advanced bizarre dolls. So, it's sometime after Undertaker collects real Ciel's body.

As part of Modri's recovery effort, he's treated as a patient, like walking around in a hospital gown and using an IV drip attached to a pole on wheels.

Even though Modri might use "Polaris" blood, he's still not necessarily Lord Polaris, since that blood type is very common, just like "Vega" blood. Besides, Lord Polaris doesn't seem to rely on an IV drip being attached all the time. Even real Ciel suggests that Polaris only needs to be recharged with blood transfusions every once in a while. I'm thinking this might be an explanation about why the glass blood bottles needed to be replaced with something less breakable. So, now we might be talking very recently awakened, perhaps as recently as when Undertaker got an update on the events at Heathfield's manor. EDIT: This can't be after the Heathfield manor report, since that's all happening at the same time as this situation in Brighton.

Idk why he's shown with blood on his hands and arms, once he's again shown wearing his "deacon" outfit.

However, soon he's sent on a mission to encounter Sebastian at Nectar Springs... having probably been told the demon he has been searching for is to be found there. Right then, it doesn't matter too much rather it's actually Sebastian or another demon his revenge should be against. Only now, with both Sebastian and John Brown (whatever he must be) in the same room and hearing this tale, I wonder which one's memories might be jogged by the situation.

But, here he is. Notice that the IV pole has changed from regular to cross.