From AntiHax

Lockbot

Lockbots latch onto other players, typicaly the closest enemy. These are very noticable as the cheater smoothly follows players around and usualy have a hard time moving while locked on.

The speed of the lockbot jumping from player to player in this video makes it look like the video is edited, but if close attention is paid to the compus in the bottle left, it is quite clear their view angle is snapping from player to player.