JL Mast is a layout artist for Marvel digital line: the Infinite Comics.
He worked on the series:
"Guardians of the Galaxy Infinite",
"Amazing Spider-Man: Who Am I?",
"Avengers Assemble Infinite"
"Ultimate Spider-Man Infinite",
"Iron Man: Fatal Frontier",
"Thanos A God Up There Listening"
"Captain America Fear Him:"
"Original Sin: Secret Avengers"...
JL Mast is also the co-creator of Pax Arena & The Walking Pandas, published by Mark Waid's Thrillbent. He was the co-cartoonist of Jim The Duck's comic strips, from NBC's famous TV show Community.