ZGMF-X56S/θ Destiny Impulse Gundam

The Destiny Impulse is a Mobile Suit in the Cosmic Era timeline.

Combat Abilities
Besides using the base armament of the ZGMF-X56S Impulse, the Destiny Impulse is equipped with the θ Destiny Silhouette, granting it access to a wide variety of additional armaments. This includes two MMI-710 "Excalibur" anti-ship swords, the same types used on the Sword Silhouette, two high-energy long-range beam cannons, two RQM-60F "Flash Edge 2" beam boomerangs, which double as beam sabers and lastly two MX2351 "Solidus Fulgur" beam shield generators, which are mounted on the forearms of the suit. While the Destiny Silhouette effectively duplicates the functions of all three original Silhouettes, its very high power consumption makes it poorly suited for combat use on a battery-powered mobile suit.

System Features
While the base unit of the Impulse features the standard abilities of the other Second Stage Gundams, the three additional Impulse units lack the Variable Phase Shift armor. It is also unknown, if these units use their own YFX-M56S Core Splendor unit. The Destiny Silhouette also grants the Impulse access to the beam wing propulsion system.

History
After the first Bloody Valentine War, ZAFT created a new series of advanced Gundam-type mobile suits as part of its Second Stage series. One of these suits was the Impulse, which has the ability to mount Silhouette packs to adapt to different combat situations. One such Silhouette pack was the θ Destiny Silhouette, a pack not used as a standard armament of the Impulse. This pack served as a testbed for some of the weapons and systems of the ZGMF-X42S Destiny, and thus includes a wide variety of weapons as well as the beam wing propulsion system.

Due to the high power consumption of the pack, it was never used in battle by the standard Impulse. However, during the course of the Second Bloody Valentine War, three additional units of the Impulse were built, each being equipped with a more advanced version of the Destiny Silhouette. Unit 1 was purple, white, and pink, Unit 2 red, white, and purple, and Unit 3 blue, white, and grey. The first (Unit 01) was eventually piloted by test pilot Mare Strode. Equipped with the Destiny Silhouette, the Silhouette was instead captured by the ZGMF-X12D Astray Out Frame D during a chance encounter with the Junk Guild. Mare's unit was then forced to retreat. Another unit (Unit 03) was piloted by Courtney Hieronimus during the final battle near Mobile Space Fortress Messiah, also equipped with a Destiny Silhouette. The fate and pilot of Unit 2 is so far unknown.