To become a ninja you need to spend lots of time fighting the war of card jitsu and when you get the black belt you need to fight sensi and if you win you will become a NINJA!
But if that is not what you mean then you need to be a member to be a true ninja.
( you have to buy the ninja outfit)
Hahahahaha, you know you have no life when you know how to beat every game in Club Penguin! LOL
You can become a ninja by going to Lakeshore and Ty will teach you to become a ninja.
you should become a fire ninja
You can teleport like a Ninja, as well as dress like a ninja (Using boolprop testingcheatsenabled true and pressing Shift and N in Create-A-Sim), but you can't -become- a ninja. You can't be paid to be a ninja, and you can't kill people like a ninja.
Once you become a ninja you get a ninja mask and gain entrance to the ninja hideout. Once you are at the ninja hideout you can buy ninja clothing and furniture, train to become a fire ninja or a water ninja. Or just play other ninjas in regular card-jitsu.
Who do you think I am, a ninja vampire expert
Go in the ninja hideout, and buy it from the ninja catalog.
You have to play the ninja card game at the dojo.
There is no ice ninja now
You can become a ninja faster by earning the belts and fighting people more.
Umm... I guess you can't become a REAL ninja even is your username has the word ninja in it. You can pretend to be a ninja if you wear a ninja costume. My username is prinsess5742, I log in pink cow and I'm a premium member. Also you have to be a premium if you want the ninja costume.
you have to play it to become a ninja. that is where you get the colors.
you buy ninja amour from ninja in greenguard Forrest