A group of robots who serve as the law enforcement in the city of Metru Nui. They wield various staffs that have different effects depending on the type of Vahki who wields them. In addition they have disk launchers installed in their mouths.

The six types of Vahki are:

[[nuurakh_(bionicle)|Nuurakh]]
[[bordakh_(bionicle)|Bordakh]]
[[vorzakh_(bionicle)|Vorzakh]]
[[rorzakh_(bionicle)|Rorzakh]]
[[zadakh_(bionicle) |Zadakh]]
[[keerakh_(bionicle)|Keerakh]]
vahki (bionicle)