There were many DigiDestined in the past. They learned that when a Digimon digivolves with anger and hatred, it turns into something evil.
It is called Dark Digivolution. But to have your Digimon intentionally digivolve in this unnatural way... It sickens you to the core, but also gives you a strength like no other. Or, that is at least how I felt when it first happened to me. DigiDestined who use this as their main form of digivolving are what I like to call the DigiDoomed. Years after the first and second generations of DigiDestined saved the world and brought Digimon and humans together, all thought the darkness was gone for good, but without evil there cannot be good. Thus, somewhere in the shadows, since it's defeat the "darkness" was not hiding but plotting something none of the previous DigiDestined could imagine. The darkness plotted to take over the next generation of Digidestined, thus the DigiDoomed childrens' birth was set in motion...

(F)Tamiko Osaka: Darkness

Partners: BlackGatomon

(F)Miyoko Toyama: Hatred

Partner: Kokomon

(M)Riku Shiga: Cowardliness

Partner: Commandramon

(M)Hayate Aomori: Indifference

Partner: DemiDevimon

(F)Yuzuki Kunamoto: Dishonesty

Partner: Dracmon

(M)Tarou Fokuoka: Untrustworthy

Partner: Dracomon

(M)Michi Okinawa: Ignorance

Partner: Phascomon

(F)Kiku Aichi: Malice

Partner: Dorumon