Sam Ichijouji

Sam Ichijouji was Ken Ichijouji's older brother. He was a Grade-A student and got most of the attention from his parents. One day, when he and Ken were sitting in his room, a Digivice which was meant for Ken came out of the computer. Sam thought that it was for him and told Ken not to touch it, but Ken took it and was transported to the Digital world. Later, Sam scolded Ken for breaking his trust and Ken found himself angrily wishing that Sam would disappear. Later on, Sam died, leaving Ken to feel guilty. This guilt and envy for his brother, along with the Dark Spore, pushed for Ken to become the Digimon Emperor. This was revealed to only be a trick to manipulate Ken. This plot was set up by Yukio Oikawa just to get to the Digital World for his "obsession" with digimon. Soon, Ken turned dark and cold and his D-3 also became dark. Later, Sam was revealed in the show as why he ever became the Digimon Emperor, along with the regret, hatred, and loneliness. Sam Ichjouji had died by a car that had hit him, this had made Ken think this was his fault for the wish he had made.

In the Drama CD "Digimon Adventure 02 Original Story: 2003 -Spring-" Ken describes Sam as being cold and always in a bad mood. Ken reasons that it was because he was forced to grow up too quickly.