Besides that Ho-oh is regarded as the guardian of the skies due to its flying nature. Thanks to its powerful attack stat and the ability to soak up severe damages and very strong flexible moves that make him a rare combination legendary that can operate as a tank and as fast attack member.
Shaymin is a sky/ grass warrior who was revealed in February 2008 that’s when it was recorded as the star of Giratina and the sky warrior. One thing about Shaymin that is worth noting is that it can only change its form on certain hours of the day.
From land form, it can transition to sky form on certain hours of the day using the Gracidea flower that transforms it into an elegant appearance so unique from another landform Pokémon.
Shaymin is blessed with high-powered special moves and prides in the base stat of 100 spread which gives it the ability to do its signature move Seed Flare.
Victini is a dual type legendary for both psychic / fire. Originally it was heard through the Liberty Pass event; later it was given as a WIFI Wonder card for White 2 / Black 2 briefly. Victini is believed to bring victory to those trainers that befriend it.
Mew is a Psychic type, and it had unique abilities that lacked in other legendary, and that is its ability to learn every HM, TM and the tutored move which is a safe move for a rare few.