Sensei comes on Club Penguin when the Martial Arts catalog (in the ninja hideout) is updated with new items, when there's a card jitsu party, or when a new card jitsu game is released, like card jitsu fire, card jitsu water, or card jitsu snow.
Sensei came on club penguin November 2011 at the card - jitsu party.
Sensei is his ID
sensei
sensi
you need to meet sensei and click get free item/background Save
It's in the dojo right next to the sensei its a little tiny tree, click it and a little egg will come out.
only sensei knows
Dojo courtyard
You have to find the Sensei and put his profile and click on a box on the bar below.
Iten 14
Sensei is not currently online on club penguin.....
his pass is clubpenguin sensei