StoneMan.EXE

A solo NetNavi who works as a member of World Three while being steadfast partners with BombMan.EXE.

StoneMan.EXE was revived as an Asteroid Navi by Duo and given to Yui Hazuki by Slur.EXE. He was initially ignored by his operator and took it upon himself to act on her perceived will on his own.

(Source: The Mega Man Knowledge Base)