Francis Tsai was a San Diego-based American comic book artist and illustrator of Taiwanese-Japanese descent. Born in Hawaii in 1967 and raised in Texas, Tsai studied chemistry and eventually architecture. From the late 1990s he worked as a conceptual designer for video games through Presto Studios and later High Moon Studios. Tsai had additionally served as an illustrator for Magic: The Gathering cards, Dungeons & Dragons manuals and ImagineFX magazine. He was active as a cover artist for Marvel Comics from 2007, and produced interior art for Marvel Comics Presents. He drew the comic book mini-series Tracker in 2009, and the mini-series Mercy Thompson: Homecoming, based on the Patricia Briggs novels. Tsai was diagnosed with Amyotrophic Lateral Sclerosis (ALS) in 2010. He lost the ability to move his arms and hands, but he picked up digital painting on his iPhone with his right big toe, and later through eye-gaze technology. Tsai passed away on 23 April 2015.