Cybermen

the cybermen were at first trying to kill the bobs until the bobs made a exchange with them that included a life time of free oil changes from the bobs and in return the cybermen would protect the bobs from the daleks becoming the bobs army.

Betraying the bobs.
the cybermen in the heat of the bobs biggest battle with the daleks turned on the bobs and started deleting them, thus ending the bobs peace treaty with the cybermen.

the cybermen were almost wiped out by the daleks before giving up and joining the daleks.

the remaining cybermen were destroyed by superbob.