The Webber is an all-terrain spiderbot equipped with a short-range EMP beam. It doesn't do any damage, but can paralyze enemy units, rendering them helpless. Webbers can also Reclaim, and can do both at once—they can Reclaim stunned units, literally "eating" them alive!
Webbers are hidden from radar, and can easily ambush enemies with poor line of sight.
As it shares the Recluse's cliff-climbing ability, the two make a great combo, Webbers holding enemies still for their rockets to finish enemies off.
Webbers are also perfect for reclaiming wreckages in hard-to-reach places without need for Construction Planes.