Yahru was an elementless matoran who was trained in the fighting style of Mata Taekworu Zhex by Seihu , along with his former friend Shinorax. He went across the island of Mata Nui to learn more about all the Matoran, Turaga and Toa; as well as gain skills that were unique from each of the 6 villages. In other words, he was a secret Chronicler. He was sent to Voya Nui by Turaga Seihu to help the Toa Inika fight the Piraka. He follows a code of honor, therefore his personality is calm, honorable, and noble. Sometimes, he doubts his own abilities and sometimes uses training to hide his insecurities about his skills.
Yahru also has a very balanced fighting style in both skill and strength. Being that he was trained by Toa Seihu the longest, he is the most seasoned out of the team.
Quoting Stormjay Rider
Eh. A bit too skinny in the torso, should have a bit more bulk. Also, I don't like the way the spikes stick out on his legs. The shoulders are nice though.
I always appreciate your feedback Storm, Yeah I'm starting to get that the blue spikes were not the best idea. It was a way of trying to add some detail to the legs and to get something to match the color of his arms. As for the torso, I will replace that Rahkshi torso sooner or later. Although I still might do something with the Matoran chest.