Chrysalis

A chrysalis is a type of cocoon used by the zerg.

Overview
Chrysalises have been used to infest terrans. Most experiments yielded poor results, but one "success" came in the form of the Queen of Blades. She in turn used this method in projects infesting terrans. The process was usually a failure, but it proved to be successful with Ethan Stewart.

During the assault on Korhal, the torrasque ultralisk strain was made. Upon suffering fatal damage, the ultralisk would enter a chrysalis state, before emerging from the chrysalis fulled healed.

StarCraft
There are two known forms of chrysalises:
 * Young chrysalis, a drone-portable "power-up."
 * The chrysalis is placed in a beacon in the two first missions. In the first mission, if the carrying drone is killed, the chrysalis will simply reappear on the beacon. If the carrying drone is killed on the second mission, the player will have two minutes to retrieve it or will lose the mission.
 * Mature chrysalis, a special structure.
 * Both versions of the chrysalis shares the cocoon portrait.

Wings of Liberty
In Wings of Liberty, chrysalises are found in The Evacuation as optional research objectives. There are three scattered about the map, with each yielding one zerg research point.


 * Development

During development of Wings of Liberty, Raynor's Raiders could collect genetic information from chrysalises with SCVs. This granted bonus damage to infantry.

Heart of the Swarm
In Heart of the Swarm, chrysalises are formed at the player's main hive cluster when Kerrigan is killed in a mission, and also if Alexei Stukov is killed in the Phantoms of the Void mission. In The Crucible, Kerrigan enters a chrysalis which must be protected from Yagdra's pack and the remnants of Brakk's pack.

Co-op Missions
In Co-op Missions, Zagara and Kerrigan both use chrysalises to spawn on the field, and to respawn when they are defeated.