Shani is also believed to be the incarnation of Lord Krishna according to Brahma Vaivarta Purana where Krishna said that he is Shani among planets. He is also called Saneeswar means lord of Saturn .is designated the task of granting the fruits of one's action and is the most feared amongst Hindu gods.
Lord Shani is the son of Surya (the sun) and an embodiment of the planet Saturn. As per astrology, he's one of the most dreaded 'graha'. It is believed that if a person's Shani causes obstruction, then, in that case, no other planets can deliver any positive results – such is the power of Lord Shani.