Walter De Marco (a.k.a Mass Customs) is an art teacher and freelance sculptor/illustrator, based in Buenos Aires, Argentina, where he lives with his wife Mercedes and his daughter Mayumi. His main tools to create his art pieces are ZBrush and Photoshop and he has worked in the video game industry, architectural visualization, and publishing, among other visual fields 

His family is not only a source of inspiration to work harder every day, but Mercedes is part of the creative team, suggesting ideas, criticizing, and approving or disapproving of each new product

A childhood fan of fantasy universes such as Masters of the Universe, Star Wars, and many others from Popular Culture, at the age of 12, he was forced by social rejection (bullying, mandates due to age, etc.) to give away his collection of action figures because "he was too old for those things." In his twenties, he went back to buying action figures (especially the ones he had had as a child) and at 39 he took total revenge by creating his own parts to customize figures

Since 2019 he materializes the feverish fantasies of customizers through private commissions

In mid-2021, he decided to migrate his products to his own online store to continue this wonderful adventure and provide a better service to his loyal customers and followers