Created the iconic 1992 Slam-Dunking Skullman design.
Greg Speirs' Slam-Dunking Skeleton trademark became a household icon when first seen by the world adorning tie dyed jerseys worn by the 1992 Lithuanian Olympic basketball team at the medal ceremonies in the Barcelona 1992 Summer Olympics. He acquired the status of being the major sponsor of the team by donating 100% of his profits which were the major funds generated from the sales of his trademarked "Slam Dunking Skeleton" to fund the Lithuanian Olympic basketball team's journey to the Olympics, after their newly found independence and breakaway from the Soviet Union. He donated all further profits realized to Lithuanian children's charities which amounted to at least over $450,000. dollars.