Jeffery Grabman, a federal agent, lived as a renegade biker named "Gringo"

Jeffery Grabman, a federal agent, lived as a renegade biker named "Gringo" and played the role so well that he established a chapter of the Outlaws motorcycle gang in Petersburg staffed by other undercover agents and paid informants.

The 20-year veteran of the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives had a fictitious identity complete with a fake history and a false driver's license and credit cards, a shaved head and a goatee.

"Basically, I was another person. . . . You never came out of your role," he testified yesterday.

Grabman, now neatly groomed and wearing a suit, was on the witness stand all day yesterday, on the second day of the trial for four members of the Outlaws, including their national president, Jack "Milwaukee Jack" Rosga, 58, on conspiracy and other charges in federal court in Richmond.

Grabman is expected to be back on the stand for cross-examination this morning.

Also on trial are Outlaws Mark "Lytnin'" Spradling, 52; Leslie Werth, 47; and William "Rebel" Davey, 46. Each is charged with conspiracy to commit racketeering and conspiracy to commit violence in the aid of racketeering.

Davey and Werth also are charged with violence in the aid of racketeering and firearms violations.

Grabman and another undercover agent initially infiltrated the Mongols motorcycle club, which sent them from Baltimore to open a chapter in the Richmond area in 2008. However, in October 2008, an undercover operation against the Mongols in California resulted in more than 100 arrests there.

The Outlaws wanted to expand in this area and invited Grabman and the other undercover officer to become probationers for their club.