Glasslings are a failed mutated version of the Zergling strain. Spliced to use a silician-based cellular structure, they are meant to be resilient to temperature extremes and energy weapons. Their mutation also allows them to modify their bodies to be razor thin to increase melee damage and be invisible to detectors (Transformers - ROTF: Reedman). Special abilities: * Burrow/Unburrow - unit is hidden from enemy forces without support from detectors, but cannot move or attack * Glass body (passive) - unit cannot be seen by detectors and attacks with 600 melee damage