Guardian of the earth

The slogan of the protagonist's side is: magic hammer magic hammer change! ! !

I remember that I could turn a small combined robot into reality, and I also found some companions to drive and deal with the enemy. It's funny, but I can't remember whether it's Japanese animation or Korean animation.

This is a Korean animation. The protagonist is a little boy and an animal. At first, the boy had a magic hammer that could make things bigger and smaller. Later, the magic hammer fell off, and a flying machine like a Rubik's cube appeared, which was driven by a little boy. It is very powerful. Their boss seems to be called X.

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