Ian Jones-Quartey was a storyboard revisionist/supervisor of Adventure Time. He also used to be a storyboard artist on Secret Mountain Fort Awesome. His previous credits include art director on The Venture Bros. and SuperNormal. He created his own short, Lakewood Plaza Turbo, in 2013, which eventually got turned into a series, known as OK KO! Let's Be Heroes. He currently works as the supervising director of Rebecca Sugar's show Steven Universe.