Junior

ジュニア

A mysterious, effeminate boy with the power of intangibility (the same power possessed by Nancy) who befriends the Paper Sisters.

Later in the series, he is revealed to be a tool in Joker's scheme--and that he is the child of Nancy and the I-Jin Ikkyuu Soujun. To Joker, he is considered "The Perfect I-Jin"; hence Joker is keen to use him as an agent and later as a medium for resurrecting The Gentleman. Extremely reserved and emotionally distant, he is drawn to people who show him kindness, especially Anita and Michelle. While he is an efficient agent, he lacks the ruthlessness of his father.

(Source: Wikipedia)

1