so I've seen EMPs suggested, but what about a magnetic robot? it would have an ability which essentially would scramble itself and rearrange in another location (it would not be able to move untill it has finished rearranging), and it would look like a black mk2 sword bot whose limbs would be disconnected from it's body (for mk1). this could work in a mk chain i.e. mk1 mk2, and mk3, it would end up getting an EMP ability for mk3, and I think would be pretty cool enemy. this idea is most definitely open to suggestions, and I know that it could be revised to be made better. i personally don't think it is too overpowered, but I may be wrong :)