Corner Cover

A cover (or other high profile still image) that features a character taking cover with their back to a wall next to a corner while the audience sees around the corner. This simultaneously allows a frontal shot of the hero, gives the image depth, displays of some manner of antagonist, and conveys a sense of danger.

Anime and Manga

 * The Shintaka Rajima cover had the boy and his dog's backs on the rock wall, they just open a treasure box filled with treasure. Unknown to them, there's pirates behind the rock wall, waiting to ambush them.

Comic Books

 * The Tomb Raider: Survivor's Crusade #4 comic issue, had Lara perch on an ancient window sill which also functions as a wall. Also, she's aiming her bow and about to shoot an unknown foe.
 * In the Tomb Raider: Arc 4: Spore, had Lara hiding in a store. Her back is to a wall and she has a knife in her hand. Meanwhile, a man is breaking and entering.
 * The Over The Wall cover has the Heroine and her beast friend in the ancient ruins, the beast's back is on the wall. Overhead, a large shadowy hand appears out of nowhere to grab them.

Literature

 * The Dutch cover of Harry Potter and The Half Blood Prince has a black robe figure in the staircase corner, getting shot by a spell. The other side of the    has two figures casting a shadow and coming up the stairs.
 * The book cover of I Always Sit with My Back to the Wall features Harry Croft is calmly sitting near a corner, where two walls meet.

Tabletop Games

 * Altema Games' Unbroken had an injured adventurer watching as monster slaughter her former companion.

Theater

 * One of the Wait Until Dark posters, had a doll, whose back is to a corner.

Video Games

 * The title screen of Wolfenstein 3D shows the hero waiting behind a corner prepared to to ambush a guard approaching the corner. The various ports all maintain this, but with serious variation on how much shadow BJ is in.
 * Underrail's cover features a man behind a corner, who is waiting for the right moment to chunk a grenade at some approaching foes.

Web Comics

 * Issue 3 of The Dreamer has Beatrice holding the candle. Her back is to a wall and a painting (of the Boston Massacre), meanwhile some of the King's Regulars can be seen outside from the window as sihouettes.