Crests of the DigiDestined
The Crest not only represents what symbol their trait is but as well as their physical manifestations of a small tablet that slides into the Tags that are worn around their necks. When the person exhibits their crest trait, it begins to glow and evolves their Digimon. Once the Tags are destroyed by Apocalymon, they use the Crest to focus their power that lies within them. Each Crest has a special power that protects the owner.
The Nine Crests
Crest of Courage
Taichi Kamiya (or Tai), is the embodiment of the Crest of Courage. This is the first Crest to be found. This Crest is used to digivolve Agumon and his many Digi-evolutions. The Crest is corrupted at one point and this causes Greymon to Digivolve into a dark SkullGreymon.
Crest of Friendship
Yamato Ishida (or Matt) is the embodiment of the Crest of Friendship. It was the fourth Crest to be found along with another one. This Crest is used to digivolve Gabumon and his many other Digi-evolutions. It can be used to warp digivolve into MetalGarurumon.
The Crest of Love
Sora Takenouchi is the embodiment of the Crest of Love. It was the seventh Crest found and in Datamon’s possession. The Crest is used to digivolve Biyomon and the many other Digi-evolutions.
Crest of Sincerity
Mimi Tachikawa is the embodiment of the Crest of Sincerity. It was the third Crest found along the journey in the flower of a cactus. It is used to digivolve Palmon into the other Digi-evolutions.
Crest of Knowledge
Koushiro Izumi (or Izzy) is the embodiment of the Crest of Knowledge. It is the fourth crest found along with another. It is used to digivolve Tentomon into various other Digi-evolutions. It can be used to digivolve Kabuterimon into MegaKabuterimon.
Crest of Reliability
Joe Kido is the embodiment of the Crest of Reliability. It is the second Crest to be found by the group in cage (which happens to be a trap). It is used to digivolve Gomamon into various other Digi-evolutions.
Crest of Hope
Takeru Takaishi (or T.K.) is the embodiment of the Crest of Hope. It is the sixth Crest to be found by the group on a cliff wall. It is used to digivolve Patamon into his various other Digi-evolutions. It can be used to digivolve Angemon into MagnaAngemon.
Crest of Light
Kari Kamiya is the embodiment of the Crest of Light. It is the eighth Crest to be found and the DigiDestined do not know of its existence at the time due to there only being seven of them. It is used to digivolve Gatomon into her other various Digi-evolutions.
Crest of Kindness
Ken Ichijouji is the embodiment of the Crest of Kindness. It is the ninth Crest to be found and in the second season of Digimon Adventures. It was once corrupted into being used as an energy source. It is never used to actually digivolve Wormmon at all, mostly since the Tag was never found.