From the Body Snatchers story, a couple is knocked out with drugged flowers.

Poor White Rabbit is knocked out by a spot of Kung-Fu.

White Rabbit is KO'd again.

White Rabbit is KO'd.

A villain knocks out Batgirl off-panel as he storms an office building.

A villain in a mask knocks out Kate Bishop from behind.

Taskmaster knocks out Black Cat with his shield.

The Witcher's female companion uses magic to render a young woman unconscious.

A young woman named Carol faints twice. The first time after being thrown off a building by some goons. The second time after learning that Peter Parker is Spider-Man. Strips are pulled from volume two of a collection of Spider-Man newspaper strips featuring beautiful art by John Romita (publication date refers to...

Two scenes: 1. A woman on the street faints after seeing Spider-Man away from the Daily Bugle. 2. Mary Jane is unconscious after being stung by The Rattler. Strips are pulled from volume one of a collection of Spider-Man newspaper strips featuring beautiful art by John Romita (publication date refers to the m...

Courtney Ross is kidnapped by Arcade and wakes up tied to a chair.

A young Twi'lek is stunned by Jango after she tries to commit suicide.

Rip and the Scorpion are gassed while pulling a heist.

A blonde woman is knocked out by the bad guy and taken aboard his private jet.

Joe Golem's female companion is gassed by the bad guys.

Quick neck chop of a female villain.

The Suicide Squad is gassed on the battlefield.

A woman is knocked out by pirates.

Source: https://readcomiconline.to/Comic/Action-Comics-1938/Issue-891?id=26342

Darkstar is KO'd.