Should a mummy zombie be referred to as a zummy or a mumby?

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I snatched up the three newer expansion packs for CK2 at a Steam sale, very apropos of the last post. Seeing as most everything was 75% off I even paid up for some custom culture portraits which change the appearance of the affected culture’s characters from the default vaguely northwestern European to something more local. Are they any good? Well, they’re different.