​​Joshua Martel, also known as Oowah, is a public muralist with over thirteen years of experience, including ten years full time. His work has been commissioned by cities, civic organizations, and private institutions across the United States, including projects for Starbucks Headquarters and fine dining establishments at the Michelin level. He began his professional development assisting internationally recognized muralist Faith47, an experience that shaped his understanding of scale, site responsiveness, and conceptual depth in public art.

His practice centers on large scale murals that respond to architecture, movement, and shared public space. Working primarily through his visual language Omnia, Joshua creates layered compositions that balance realism, abstraction, and symbolism while remaining structurally grounded and built for long term outdoor durability. He manages projects from concept through installation, working confidently at architectural scale and coordinating with municipalities, developers, and multidisciplinary teams.​​​