One Piece Anime Kage -

By changing the shape of a person's shadow, Moria can force their physical body to morph into the same shape, defying normal anatomy.

Moria’s ultimate technique involves absorbing 1,000 shadows into his own body, granting him monstrous size and strength, though at the cost of speed and control. The Deadly Consequences of Shadow Loss one piece anime kage

In One Piece , a shadow is considered a "second soul" that mirrors its owner. By changing the shape of a person's shadow,

Every time Momo stands a little taller, every time we see Wano’s skies clear, that’s Oden’s shadow. He’s the reminder that legends aren’t just the ones who win. Sometimes, they’re the ones whose shadows guide the winners. 000 shadows into his own body