Chuck's Reviews Nezha Transformers Power Up Pack Nezha
 

This is a rare and interesting figure from China, that's a cool transforming robot to boot. Nezha is from a 2003 cartoon based on Chinese folklore, represented by a detailed mini-figure that can fit into the chest of the larger robot, like a Brainmaster. Transformation is smooth and the robot has more articulation than any other Ultra Class figure. While these figures tend to be a little pricey, if you can find one for a price you're willing to pay I definitely recommend it.

Chuck's Reviews Nezha Transformers Power Up Pack Nezha - YouTube