career began in 1958 at Warner Bros., where he learned to create storyboards and design backgrounds. In 1960 he joined the UPA animation studio where he became a layout artist on the television series and . Singer next worked at beginning in 1965 where he remained for the next three decades. Holding positions such as character designer, art director, and layout artist, Singer was responsible for crafting many of Hanna-Barbera’s most popular series of the 1970s and 1980s, including , , , and , for which he designed the Mystery Machine and many of the monsters in the series. Singer’s passion for illustration continues to this day.