The artist in the picture is a Kalaripayattu artist. It is one of the oldest martial art forms originated somewhere around Kerala, India. This art form includes playing with fire, swords, knifes etc.
<a href="//commons.wikimedia.org/wiki/User:Jigyasu_Baranwal" title="User:Jigyasu Baranwal">Jigyasu </a>
<span class="int-own-work" lang="en">Own work</span>