Crack Theory time!

There are tons of Ralsei copies, and that's why he can never petrify in other dark worlds. And no, it's not blankets or whatever, It's just pink items that are in each dark world, like Chpt. 2 Ralsei could be a pink wire, and Chpt. 4 Ralsei is one of the stained glass thingys in the Church.

it would make sense

the only hole in this theory would be why does ralsei remember past experiences

why does he have character development

is it liek a hive mind or sum

my theory is that ralsei is made of pure dark because the fountain that created him is pure dark, which means that he dosen’t petrify and he’s compatible with every dark world, hence being pure darkness.

The question then is still why Ralsei can move to other dark worlds freely but other darkners with their object hosted in castle town need to be relocated manually.
He's different to other darkners manifested from Castle Town's fountain as well.

Because the Grand Door in Castle Town

I like the idea but I think Ralsei is kind of like an anti-titan

MY B3STO FR13NDO

People crucify Ralsei and if he's an anti Titan does that mean that titans are the anti-christ?

MY WORSTO 3N3MYO

MIKE! Put Muddtile in the screenshot!

What if he's shadow itself
So he's always anywhere as long as its dark=every Dark World
But not Fear like a Titan
Just
Shadows
Because Shadows can't exist without Light...
Ying Yang...

literally same

They share one consecutive braincell

which is 1353,658 kilometers across

yes