Metro

In 2018, Cullen Bunn and Brian Quinn co-wrote a single-issue comic from an independent publisher, illustrated by Walt Flanagan, that offers a gritty, street-level look at life in the urban underground. This self-contained story focuses on the raw, often unseen world of a city's subway system, blending crime and survival in a tight, atmospheric package. While brief, it stands as a notable collaboration between these creators, capturing a specific, grounded moment in modern indie comics.