Hamilton and Renesto became a well-traveled heel tandem through the 1960s, competing in the Mid-Atlantic territory, Georgia, Florida, California, Arizona, the Pacific Northwest, Canada, Japan and Australia among other areas, and winning championship gold along the way.

After Renesto retired from the ring, Hamilton continued The Assassins with new partners in later years, teaming up with Roger Smith and then Randy Colley, before forming the 1980s version of the masked team with Hercules Hernandez in Jim Crockett Promotions, under the management of Paul Jones, who used them as part of his feud with the popular Jimmy Valiant.

That version of the team lasted until Hernandez was unmasked after losing to Valiant in a mask vs. hair match at a JCP/Maple Leaf Wrestling show in Toronto, Ontario, on April 15, 1984.

Hamilton continued on solo after Barry left JCP, breaking his ties with Jones to turn babyface once again and feud with his former manager, which climaxed with Hamilton teaming with Buzz Tyler to beat Jones' Zambuie Express (Elijah Akeem and Kareem Muhammed) at Starrcade 1984 in Greensboro, North Carolina.

Hamilton reopened Deep South Wrestling in 2005 to serve as a developmental territory for World Wrestling Entertainment, but WWE severed its developmental deal with DSW on April 18, 2007, and Hamilton continued running the promotion on his own as an independent until he folded DSW shortly after its October 11, 2007, event.