Big bullies to the NERDs, the Vamps are a mech pilot's best friends. Doberman pilots in particular rarely leave the barn without a pair nestled o the back of the shoulder-plates.
These 'bots are bigger, faster, and far more durable than their NERD counterparts. They boast a far more sophisticated suite of surveillance gadgetry, and their center-line-mounted laser cannons are well-suited for sniping off infantry. When not otherwise engaged, their can link up directly to their papa-mech's TacNet and add their firepower to a squad's defense, picking off incoming ballistics.
Their shortcoming comes in the form of a high emissions signature. Unlike the NERDs, Vamps are noisy on almost every spectrum, giving them all the stealth of a horny boar.
When in flight, the primary sensor boom can swing down below the droid, increasing its range and sweep.