Is there any way I can get NPC's to move in to a Corruption Biome?

[Hikumi]

In my next part of building themed towns, I wanted to try to make a town right in the middle of a Corruption Biome. Problem is... I kinda forgot NPC's don't want to live in an evil biome. Is there any way at all to convince them to stay? I tried turning the biome into Corruption after moving them in, but they teleport to other houses at the next sundown.

[b_rigid]

use enough blocks to change the biome of the housing to something other than corruption. while everything around the house stays corruption (similar to how you'd get the above ground mushroom biome house for the truffle or the jungle biome house for the witch doctor in an otherwise normal forest biome)

[Vent]

If you're very clever about how you place the corruption blocks, such that the PC part of the house is in corruption, but the NPC part of the house is out of corruption, then yes you could do it.

This might be of use to you:

https://terraria.gamepedia.com/Guide:Artificial_biomes