Sun Wudao

Introduction
Brought at the Sword immortal Sect by a sect cultivator at the age of 15. Missed the opportunity to become an official disciple.

Wu Yu at a near-death state  was handled to him by the sect leader later he becomes the closest person to Wu Yu in the sect.

he died chapter 15 at the hands of Situ jin

Death
After Wu Yu left, Sun Wudao's grave shimmered with golden light. It seemed like a vague impression of a wrinkled, smiling face appeared.

A golden hair floated out from the grave.

It was not a human hair, more like that of a beast's.

"Wu Yu, we will meet again."

The hair flew higher and higher, until it was lost in the darkness.

"In this vast world, there is only you and me left of 'his' legacy."

The smiling face on the grave gradually faded, until it was all pitch black. (chapter 19)

Appearance
His body was skinny and he was shorter than Wu Yu by a head. He had a head of silverish hair, wrinkles spreading throughout his face, and murky eyes.