[1] McNeil's chief work is the ongoing science fiction comic series Finder, which they began self-publishing in 1996.

[5][6] In 2008, McNeil adapted and illustrated D. J. MacHale's first Pendragon book, The Merchant of Death, into a graphic novel, and it was released by Simon and Schuster on May 20, 2008.

They collaborated with Alex de Campi for two comics: they illustrated a few pages of the graphic novel Ashes, as well as the first issue of My Little Pony: Friends Forever, which was released by IDW Publishing.

In April 2015, McNeil started illustrating No Mercy, a series written by Alex de Campi and colored by Jenn Manley Lee.

[14] They have done work for Saucy Goose Press' anthology Smut Peddler, which is a collection of comics centered around sex positivity.

[16] They wrote and drew the story "Frog and Snake Never Play Together" for the popular anthology Cautionary Fables and Fairy Tales Vol 2: Africa Edition in 2014.