The costume for Ninja has been designed using a black piece of cotton cloth. But while using the same, fabric needs to be handled carefully. Choose a material which is stable and slightly stiff. Light fabric has a tendency to move on its own.
Occasionally, the animators prefer to get their puppet's clothing sculpted from silicone or latex. However, fabricated costumes add richness; giving your puppet a sense of individuality.
Since it is stop motion you need to create every action, frame by frame. Even the movement of secondary actions should be in a flow.
For example Ninja's red belt, will have a wire attached to the cloth so that it can be animated accordingly.
The easiest way to make eyes is using white glass beads, using the hole as a pupil that can be manipulated with a toothpick.
We used m-seal to make the shoes. There was a gap left in between on purpose so that we could pin the character to the ground while animating it.
Here comes the Warrior: