Complex sentence: Haynes went back to Oregon in 1988 and wrestled in their independents until he showed up in World Championship Wrestling with the gimmick of a masked executioner from France named Black Blood in Kevin Sullivan's stable.
Split into simpler sentences: Haynes went back to Oregon in 1988 and wrestled in their independents. Haynes returned to the major promotions when he appeared under a mask in World Championship Wrestling as Black Blood in Kevin Sullivan's stable.