Lucas is an 11-year old boy who is an orphan. A family of holy digimon (fresh to champion) looked after him till he was 3 years old, when he became freinds with a Bebydomon and they stumbled into a DigiGate. He was found by a care-home worker and was taken to a foster home.
Yushiko is 11 years old, and is Lucas' twin brother. He was found by a small child who's family adopted him. He was found with a Tsunomon, who was also adopted by them.
Max is nine years old and has a Hyokomon as his partner.