It's Adventure Time with.... Howard the Duck

A single-issue comic from 1978, this one-shot teams the cantankerous Howard the Duck with his creator, writer Steve Gerber, and the moody, expressive pencils of artist Gene Colan. Published during the character's peak popularity at Marvel, it's a standalone adventure that captures the satirical, offbeat voice Gerber established in his landmark run. Though brief, it's a notable artifact of a beloved, unconventional series.