These dead puppets could be brought in.
Of course, items that could be controlled, like Guillermo a corpse demon, could not be brought in. However, the core of the corpse demon was this shell.
As long as his body entered the Dark Ancient Tower, Levi could find a way to make them move.
"Next, if I want to control this Blood-Armored Corpse Demon, I still need to refine a spirit-type undead creature into it to turn it into the corpse demon's... soul!"
Otherwise, the corpse demon would not be able to move on its own.
Fortunately, Levi was already prepared to summon hell creatures.
A long time ago, he had learned a summoning spell from the School of Hell.
Now, with his strength, summoning a fourth-circle undead spirit should not be a problem.
Summoning it, capturing it alive, and refining it into the corpse demon's body.
