Warner Bros.' worst heroes ever aren't bullet-proof, but they very well may be critic-proof.

Brushing off a flurry of negative reviews, "Suicide Squad" is conquering the North American box office, on its way to an estimated $147 million opening weekend. Some predict that figure could inch closer to $150 million by Monday morning.

That not only exceeds expectations -- it was projected to debut somewhere between $125 million and $140 million -- but also smashes the previous record for an August opening set in 2014 by Marvel's "Guardians of the Galaxy" ($94.3 million). "Suicide Squad" had earned about $65 million as of this morning.

The David Ayer film is also performing solidly overseas, where it expands into 57 markets this weekend. It grossed about $33 million Friday at the international box office, bringing that total to around $64.6 million.

According to The Hollywood Reporter, slightly more than half the Friday audience for "Suicide Squad" was female, which is highly unusual for a superhero film. Twenty-eight percent of ticket buyers were under the age of 18.