Ninja vs. Decepticon, then you may have a harder time choosing, and Ninja vs. Pirate can be fun too. I'd still vote ninjas though.

Fun vote.

I will settle this once and for all....The proper plural is Ninja....no s...because the ninja is like water. It is many droplettes but together it is water. Even one singal drop of water is still water...and more is not waterssssss.

So, my verdict. Ninja would own!!!!!

id say a ninja robot like metal gear solid.Gray Fox!!!! Awesome

Both are true! Wurd!

some ninja sneaks in using all manor of blades and nasty tricks and still a Robot is going to just shrug it off and keep doing whatever it is doing until the ninja prevents it from doing its task, that's when with lightning speed the robot reaches out clutching the ninja by whatever body part is close and swings it around like a rag doll till the life slips from its stupid ninja face.

What about Robot Ninjas? o_O

Well, robots are more fun to draw but if i had to pick one to watch a movie about it'd be... Yeah still robots.