Mo Willems
Mo Willems is credited as writer on 16 issues, penciller on 12 issues, inker on 5 issues, letterer on 4 issues and others in grailworth's catalog, 9 issues of them across 5 series we value.
Every issue
Cartoon Cartoons (2001) 4 issues
Cartoon Network Starring (1999) 1 issue
Mad (1952) 2 issues
Mad (2018) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.