I recently learned that the mime’s vow of silence supersedes zombification, which means when a mime gets zombified their vow of silence is stronger than the zombification. Unless you break that vow of silence, you can’t even moan out “braaiiinnnsss…” or whatever. In technical terms, it doesn’t make much sense. But in terms of gaming, I find this small detail very silly and fun so that a mime is a mime even in undeath 
The vow of the mime is stronger than death itself