Adventure Time: Islands original intro, storyboarded by Sam Alden
Final animation below, animated by Science Saru:
storyboard - Sam Alden
animation studio - Science SARU
animation directors - Abel Gongora and Juan Manuel Laguna
animators - Toma Kimura, Tatsunari Karube, Karin Noguchi, and Eri Kinoshita
compositing - Batiste Perron