Double Cross

A wall sign partially obscured by shadow in the alleyway opposite the hotel reads "Mario & Sons Plumbing and Heating" while Ben Reilly (Nicolas Cage) retrieves his mask and goggles from a storage case. The inscription functions as an Easter egg referencing the Nintendo video game characters Mario and Luigi, following a tradition of Nintendo-related references within Spider-Man media such as the 2018 Insomniac video game. While the business name fits the 1933 New York City setting of the series, the specific phrasing mirrors modern popular culture nods to the fictional brothers.

The sign says Asterio's and sons NOT Mario

Carmody wears a wedding ring on his finger when Ben Reilly (Nicolas Cage) forces open his door, despite the character having abandoned his married cover identity more than a day earlier in the narrative time-line. The ring should have been removed once the undercover marital pretense ended, making its continued presence a prop continuity oversight.