Complex sentence: In 1974 he contributed to redesigning the obscure Marvel Comics character the Cat into Tigra, and three years later created the newspaper comic strip "Star Hawks" with writer Ron Goulart.
Split into simpler sentences: In 1974 he contributed to redesigning the obscure Marvel Comics character the Cat into Tigra. In 1977, he created the newspaper comic strip "Star Hawks" with writer Ron Goulart.