Warning: contains spoilers for Batman: Killing Time #2!
DC's Batman famously has no superpowers, although that description of the Dark Knight is often accompanied by a bat-shaped asterisk in recent years. The Caped Crusader has an affinity for using theatrical techniques to strike fear in the hearts of criminals, namely appearing and disappearing at will - and sometimes in impossible ways. One such way appears in Batman: Killing Time #2, and Commissioner Gordon finally calls him out on it.
Batman: Killing Time takes place over a 3,000 year timespan, though ancient Greece to modern-day Gotham City. Multiple villains forge an uneasy alliance to acquire an as-of-yet unknown object: the Riddler is the architect of the plan, while Catwoman and the Penguin aid him whenever possible. In the present (in a sense; the narrative repeatedly jumps forward and backward in time), Batman interrogates a prisoner thanks to the access granted to him by Commissioner Gordon.
Gordon and Batman discuss matters pertaining to the case when Gordon turns his head - only to see Batman has once again disappeared. Gordon is truly frustrated this time. "Oh, c'mon...it's...a hallway..." he muses to himself. "What are you hiding behind, a #%%#&@# trash can?" This is obviously not the first time Batman has pulled his old disappearing trick on Gordon, but it is the most inexplicable. According to the panel, there's no other way in or out of the hallway other than large (presumably barred) windows and the doors at either end.
Batman's ability to spontaneously vanish from sight is a technique he was taught during his days learning how to become a master combatant at the hands of the League of Shadows, but sometimes his disappearing act strains belief. A notable aversion to this trend was in the 2022 film The Batman, in which Batman makes a daring escape from the entirely of the Gotham Police Department by running down halls, fully visible. The comics version of the Dark Knight has played this card ever since the 70s with Detective Comics #442, when he left a chair directly adjacent to Gordon.
Batman's vanishing acts are frequently only seen by his allies. Thus, even the reader is frequently left in the dark as to exactly how Bruce makes his escapes. Batman's grapple gun is an easy method, but it could make considerable amounts of noise. Batman's ability to vanish in seconds may not be a superpower, but it sure seems like on on occasions.