Digimon Adventure, Digimon Adventure 02, Digimon Adventure tri. and Digimon Adventure: Last Evolution Kizuna anime series and films produced by Toei Animation for the Digimon franchise, are centered on the , a group of children chosen to protect the Digital World. Each child is partnered with a Digimon and use a Digivice to help them Digivolve into stronger forms. The main DigiDestined cast was designed by Katsuyoshi Nakatsuru. Producer Satoru Nishizono and the staff used a name analysis software to decide on the characters' names, using kanji combinations that related to "luck". For Digimon Adventure tri., director Keitaro Motonaga found that some parts of developing the characters were "difficult to control" due to the characters' "strong personalities", but the staff had "rebuilt" the characters by taking account of their personal growth while retaining their original personalities. A new group of DigiDestined, in addition to T.K. and Kari, were made into the new main cast for Digimon Adventure 02, consisting of Davis, Yolei, Cody and later Ken. Main characters Adventure protagonists Tai is the leader of the DigiDestined, the star player on the school's soccer team and Kari's older brother. His aggressive and impulsive personality often puts him in danger, but he learns that empathy and compassion are the keys to being a successful leader. He is partnered with Agumon and holds the . Tai passing on leadership to Davis during the events of Digimon Adventure 02 while attending middle school. During the events of Digimon Adventure tri., Tai bonds with Daigo Nishijima and is inspired by the man to seek out a career in diplomacy. The Digimon Adventure 02 series epilogue depicts Tai and Agumon become diplomats for their respective worlds, with Tai having a son who is partnered to a Koromon. Matt is T.K.'s older brother. He lives in Odaiba with his father after his parents divorced three years prior. He takes caution in the Digital World, especially when it comes to T.K.'s safety, and often clashes with Tai, due to the latter's recklessness. He is partnered with Gabumon and holds the . In Digimon Adventure 02, Matt forms a band with his classmates called the Teen-age Wolves and provides lead vocals and bass. In Digimon Adventure tri., he becomes the vocalist and bassist of Knife of Day after the Teen-age Wolves disbands. In the series' epilogue, Matt and Gabumon become astronauts. Matt marries Sora and they have two