Marauder

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Marauder MkI
Using the same fire-and-forget weapons system as the turret rocket launcher, the Marauder provides decent area of effect damage potential.

Marauder MkII
The Marauder MkII implements a larger power core, which the drone utilizes to double up on its rocket pod weapon system. While using more energy, the drone can fire at a much faster rate.

Marauder MkIII
Retrofitting the largest rocket launcher system to a mobile platform is not an easy task, requiring lots of resources and plenty of power. The increased damage output is definitely worth it though.