Chakravartin Ashoka Samrat, Who was Devavrath?

Chakravartin Ashoka Samrat, Who was Devavrath?

You may have seen Actor Rajesh Khera playing an important role of Devavrath  in the Takshashila sequence of Famous Tele-Serial Chakravartin Ashoka Samrat, his role is as important as Chanakya, which was played by actor Manoj Joshi. Devavrath is seen as a Guide and a Teacher to Ashoka (Siddharth Nigam), trying to defeat Keechak (Sudhanshu Pandey) and end his tyranny and establish Dharma in the once prosperous and Magnanimous city of Takshashila.

“My character Devavrath would be like what Chanakya was to Chandragupta. He would be a mentor to Ashoka. It is very exciting to be a part of a series which is very popular among the viewers,” Said Rajesh Khera

But it has raised a question in my curious mind ” Whether Devavrath is really part of  Ashoka‘s History and a Important figure or A fictinal Role created to hype entertainment quotient or to fill the emptiness created in serial after murder of chanakya ” but i am still in doubt and couldn’t figure it on my own, if you know or have any source to quote, Please guide me.