Diane is a character in the video game No More Heroes. She is an unseen and long-suffering employee of Beef Head who usually calls Travis Touchdown after each of his ranking matches to remind him to return overdue merchandise, a majority of which are pornographic in nature. She has little patience for Travis's procrastination and once even claimed to have revoked his membership until the return of a certain video.

Her calls, which always precede Ranking Battles, parallel those of Christopher Mills in killer7, which always signal the beginning of the next target. Coincidentally or not, Diane's name sounds similar to Diana Burnwood's from the Hitman game series, who is also a character who frequently communicates via voice only and whose face is never seen. Alternatively, her character may be a reference to the TV series Twin Peaks, where the main character Agent Dale Cooper often speaks to a unseen woman named Diane through his tape recorder, a concept previously referenced by the killer7 character Holbert.

No More Heroes characters
Main Characters Travis Touchdown · Jeane (cat) · Sylvia Christel · Henry Cooldown · Jeane
United Assassins Association Rankings Helter-Skelter · Death Metal · Dr. Peace · Shinobu · Destroyman · Holly Summers · Letz Shake · Harvey Moiseiwitsch Volodarrskii · Speed Buster · Bad Girl · Dark Star · Travis Touchdown's attacker
Civilians Georgy Bishop · Thunder Ryu · Randall Lovikov · Dr. Naomi · Mask de Uh · Manager of Job Center · Manager of K-Entertainment · Diane
Other Talbot · Weller · M. S. · Mrs. Christel · Jeane (child) · Dr. Letz Shake · Master Jacobs · Wolf Vann
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