Shadow is infamous for his cold and intimidating nature. He is described as a lone-wolf, preferring to work by himself and handling things his way. Although silent most of the time, when Shadow does speak he is blunt and never afraid to speak his mind. He also takes pride in his power as the "Ultimate Lifeform." Shadow is one for focusing on the task at hand and cares little for anything else. He wants to quickly acquire the Chaos Emeralds and destroy Metallix without any interruptions, and is quick to be irritated should anyone (or anything) impede his progress. In battle, Shadow is ruthless and attacks his foes with much aggression, wanting to end the fight as quickly as possible. Despite clashing with Sonic in terms of personality, he does share his smug attitude, overconfidence, and tendency to mock his opponents.

The voice I'm looking for is something more closer to Jason Griffith's take on the character. Try your best to get a 1.1: https://www.youtube.com/watch?v=9c97SvMX7ZY&pp=ygUbamFzb24gZ3JpZmZpdGggc2hhZG93IHZvaWNl