|Jan and Jason Character|
|Voiced by||Tom Kenny, Yusuke Numata, (Japanese)|
|Last appearance||Goodbye to Jan|
|Episode count||All except "Bloo"|
|Family||Jan's Mom (mother)|
Jan's Dad (father)
Jan's Sister (sister)
Jan is a bright, unselfish, creative and somewhat shy boy with his best friend Jason when he was 10 years old. Jan is unusually clever and almost always knows what to do when there is a problem.
Jan has the ability to make friends with almost any friend, his closest being Geo Guy, and of course Jason. He cares a lot about friends, and looks out for them often.
- Jan was named after The Cast.