Remove genetic things from lings entirely.

[GORE]

Lings have a fun time experimenting with the various genetic mutations that their victims had activated. That is a thing that other traitors cannot do.

They can have like 6 sets of identities so 6 gene-sets available to them.

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Also vampires are hurt by a HOLY PLACE (chapel) and can turn into a bat. This is not human. Definitely not human.