The Warlocks Motorcycle Club was formed in the area of Southwest Philadelphia and the adjacent Delaware County, including Chester city and Upper Darby, in February 1967.
In reference to the club's Whites-only membership policy and the red-and-white color scheme used on members' patches, the Warlocks use the motto: "All white!
[6] The Warlocks are involved in narcotics distribution, prostitution, kidnapping, burglary, the sale of stolen property, violent crime and murder.
[3] On May 6, 1995, police sergeant Ippolito "Lee" Gonzalez of Franklin Township pulled over Warlocks members Robert "Mudman" Simon and Charles "Shovel" Staples on a traffic stop moments after the two had committed a commercial burglary.
At the time of Gonzalez's murder Simon was barely three months out of jail and on parole after a 1981 conviction for killing a woman in Carbon County, Pennsylvania.
In 2006, Tommy Zaroff, a former president of the Bucks County chapter of the Warlocks, was arrested on suspicion of possessing ten pounds of methamphetamine, and was sentenced to at least five years after pleading guilty to charges including distributing a controlled substance, profiting from illegal acts and conspiracy.
[18] In October 2008, Pennsylvania State Attorney General Tom Corbett alleged that the Warlocks motorcycle club is involved with a methamphetamine manufacturing operation based in Berks County.
Corbett said the operation manufactured and distributed $9 million worth of methamphetamine throughout southeastern Pennsylvania and possibly (supplied) to members of the Warlocks motorcycle club, which has allegedly been linked to organized crime and drug trafficking.
[19] In December 2017, Warlocks biker Michael DiMauro killed prospective club member David Rossillo Jr. at the Mount Moriah Cemetery in Philadelphia by shooting him four times, tying a rope around his neck and then dragging him to a crypt.
Three others — Billy Gibson, Buck Evans and Donna Morelli, a member of Mount Moriah Cemetery's board of directors — all pled guilty for their roles in the disposal of Palumbo’s body.
[22] In August 2023, DiMauro was convicted of first-degree murder, abuse of a corpse, and related charges and sentenced to life in prison without parole.