Sharkboy is a character from the 2005 Disney film, The Adventures of Sharkboy and Lavagirl. In the film, Sharkboy is the half-human, half-shark hero who combats alien intelligence. To make a costume similar to the suit Sharkboy wears in the movie, you'll need to acquire some metallic clothing and accessories. This costume can be suitable for all ages, including adults.
Purchase metallic grey trousers, tights or sweatpants according to personal preference. Trousers or tight-fitting trousers will be most convincing since they are closest to what Sharkboy wears in the film.
Buy a black turtleneck to be used as the layer underneath Sharkboy's shield vest.
Use a grey or metallic silver utility vest in place of Sharkboy's shield. You can find such a vest at a sports shop or camping supply store.
Draw shark teeth in the shape of a shark's open mouth on the front of the vest using a white fabric marker to emulate the design of Sharkboy's shield.
Cover thin sheets of cardboard with metallic spray paint. Allow the cardboard to dry overnight.
Trace the shape of a shark's fin using a pencil and then cut out the shape using a box cutter. The size of the fin will vary according to the height of the person wearing the costume; measure the fin to reach from the base of the neck to the middle of the back.
Attach the fin to the back of the utility vest using a hot glue gun. The fin should stand up on its own once it dries.
Finish the costume with a pair of black elbow length gloves.