Ark was a Japanese company that produced a series of die-cast metal monster toys sold under the brand name "Arklon." It was originally founded as a sales and marketing subsidiary of famed Japanese toy manufacturer Bullmark. After Bullmark's bankruptcy in 1977, Bullmark co-founder Saburo Ishizuki took charge of Ark and turned it into a full-fledged toy manufacturer. Ark released a variety of toys during the mid-to-late 1970s, including die-cast, soft vinyl, and inexpensive plastic toys. The Arklon toys were imported to the United States by the Marukai Trading Company.