Ruru Bhairav

Ruru Bhairav, also called as Anand Bhairav it is at 6th number bhairav in pradhan Bhairavs, in the narration of kashi khand, there is a reference to Ruru bhairav in kashi khand.

After Goddess killed the evil demon Durgasur (Kindly refer Durga Devi), she created  nine shaktis which were stationed in various places in Kashi to protect the holy city and its denizens. (Kashi Khand, Chapter 72).
In the same way eight forms of Bhairavs were created who were positioned at various places in Kashi.  These Bhairavs protect the devotees from all sorts of evils and give the devotees happiness and prosperity in their lives.
Devotees who worship these Bhairavs will develop a strong mental frame work and will be courageous.