Boys Letter "M" Costumes

Make every moment magical with our mighty collection of boys’ costumes starting with the letter M. From fearless heroes to classic characters, this range is packed with outfits that are perfect for Halloween, school events, parties, and endless imaginative play.

Let your child become a legendary magician, complete with cape, wand, and a few tricks up his sleeve — ideal for putting on a show or casting spells in the spotlight. Or suit up as a brave medieval knight, ready to defend castles and battle dragons with honor and courage. For comic book fans, a powerful masked superhero brings high-energy action and heroic fun to life. Looking for something a little more monstrous? A mischievous mummy costume adds spooky style with wrapped-up charm that’s perfect for Halloween night.

All of our letter M costumes are designed for comfort, durability, and full-on character play. Whether your boy is performing magic, saving the day, or haunting the halls, this collection has the perfect M-powered look.