GUMOZ

Yajima-san Rumble Monsters is a Japanese art toy brand renowned for its contributions to the neo-sofubi movement—a contemporary revival of traditional Japanese soft vinyl figures. Established by the company Inazuma-Go, Rumble Monsters has been a significant presence in the designer toy scene since the early 2000s. Self-produced art toys are designer collectibles created and manufactured independently by the artist or small teams without the backing of a large toy company or mass-market brand. These toys are often highly personal, artistic expressions and are usually made in limited runs. Key Characteristics include independent creation where the artist is in control of the entire process from concept, sculpting, and painting to production and packaging. These are usually made in small batches, often 10–100 pieces, which adds to their rarity, made using materials like resin, sofubi (Japanese soft vinyl), or 3D-printed components.