During his first time in the Digital World, Ken accompanied Ryo in his fight against Millenniummon.
As the Digimon Emperor, Ken saw Tai as a nuisance. He was eventually forgiven, as he became a member of the team.
As the Digimon Emperor, Ken saw Matt as a nuisance. He was eventually forgiven, as he became a member of the team. Ken and Matt travelled to Mexico City together to destroy a Control Spire, and send the renegade Digimon back to the DigiWorld.
As the Digimon Emperor, Ken saw Sora as a nuisance. He was eventually forgiven, as he became a member of the team.
Ken sometimes goes to Izzy for conversation much like the other DigiDestined. In the English dub, Ken professes to be familiar with some of the things Izzy has read, though he can no longer understand them.
As the Digimon Emperor, Ken saw Mimi as a nuisance. He was eventually forgiven, as he became a member of the team.
As the Digimon Emperor, Ken saw Joe as a nuisance. He was eventually forgiven, as he became a member of the team.
When Ken was the Digimon Emperor, T.K. was the most angry because of the creation of Kimeramon. Thus he was the first one to properly give Ken a piece of his mind, engaging into a fight with him. However, next to Davis, T.K. was the first to believe in Ken.
Ken and Kari are much alike, as both of them believed they aren't as good as their older brothers and both kept mostly to themselves instead of saying what worries them. They also were the ones haunted by darkness, more specifically the Dark Ocean. As the Digimon Emperor, Ken thought of Kari as a nuisance, much like he thought of all the DigiDestined. However, Kari and Ken became friends after Ken joined the group.
Whilst viewing all the DigiDestined as enemies as the Digimon Emperor, Ken sees Davis as his personal rival and frequently chooses to face him separately from the others.
When Ken changes his ways, he was initially distant from the group as a whole, but is ultimately moved by Davis's determination to be his friend and share his burden in spite of what he has done. Ken soon becomes the second in command to Davis, the leader of the new DigiDestined.
|This information is only considered valid within the Japanese continuity.|
Sometime later throughout the series, it is seen that these two possibly had romantic intentions with each other.
As the Digimon Emperor, Ken did not care about Yolei and merely saw her as a hindrance to his plans.
Once he is brought back to his normal self, Ken tries to gain the acceptance of the DigiDestined, Yolei included, and is thankful when he finally does so.
The finale of Adventure 02 reveals that Ken and Yolei are married with children.
Cody is the last to accept Ken into the group, which Ken understands and probably expected from everyone. In reality, Ken hoped that Cody would forgive him, which he eventually did.