Tom Brady appeared to be on his own for trick-or-treating with the kids -- the Tampa Bay Buccaneers superstar threw on a grim reaper costume for the Halloween festivities ... with no sign of Gisele Bündchen.
Brady posted a pic alongside 9-year-old Vivian and Ben, 12, on Monday ... and he was seemingly in good spirits -- cracking a joke about his all-black attire.
The quarterback and supermodel were known to do cute couples costumes over the course of their 13-year marriage .