"Chrysalis", known as "Cocoon" (ＣKokūn) in the OCG, is an archetype of monsters used by Jaden Yuki in the Yu-Gi-Oh! GX anime. These monsters are younger forms of the "Neo-Spacian" monsters. There are six "Chrysalis" monsters with different Attributes and Types, and each one has 200 ATK and DEF and 1 Level less than its corresponding "Neo-Spacian" monster. With the exception of "Chrysalis Dolphin", they also have the same Type as their "Neo-Spacian" form.
Despite this archetype's TCG name being changed to "Chrysalis", many of the support Spell and Trap Cards still contain "Cocoon".
Each "Chrysalis" monster can be Tributed when the Field Spell Card "Neo Space" is on the field to Special Summon a specified "Neo-Spacian" monster from either the player's hand or Deck.
With the use of "Cocoon Party", it becomes possible to use the "Chrysalis" monsters alongside the "Neo-Spacian" monsters and various Level 3 monsters to help set up "Neo-Spacian" monsters in the GY through "Cherubini, Ebon Angel of the Burning Abyss" to make a field of Link Monsters such as "Apollousa, Bow of the Goddess". However, the 5 "Chrysalis" monsters used for "Cocoon Party" do not contribute much to the hands they are drawn in unless their Type or Attribute is required for a particular monster trying to be Summoned, as well said hand needing to be able to accommodate that monster as the Normal Summon, such as using "Chrysalis Chicky" for "Simorgh, Bird of Sovereignty". Another downside is that having more than 5 "Neo-Spacian" monsters with different names in the GY will make "Cocoon Party" unable to resolve its effect, however this can be avoided by only running 5 different "Neo-Spacian" monsters. Using "Instant Contact" to Summon "Neo-Spacian Marine Dolphin to use as a Link Material will get two "Neo-Spacian" names in the GY at once due to also being treated as "Neo-Spacian Aqua Dolphin", allowing Cocoon Party to summon two Chrysalis monsters from deck for putting "Marine Dolphin" into the GY. Due to the deck utilizing "Neo-Spacian" monsters, the deck is also capable utilizing "Small World" effectively, as they are all Level 3 monsters of different Types and Attributes from each other, while only Neo-Spacian Flare Scarab and Neo-Spacian Dark Panther share the same Defense.
