Duelbot

Duelbot is a robot boss summoned by the Mechanist in her lair in 2287. It is an assaultron armed with highly damaging melee weapons.

Background
Duelbot is one of the many robots built by the Mechanist. During Restoring Order, it is used as a last defense against intruders along with the turretbot. The robot seems to be a modified assaultron with a sword attached to one arm and covered in scrap metal plating.