Mural by Miles (El Mac) MacGregor, Oooze Mural by David Quan.
El Mac is probably the most famous internationally of the Phoenix mural artists. I encourage you to visit his website and look under his "spray paint work. elmac.net/
From ELMac's website Bio: Born in Los Angeles in 1980 has primarily focused on lifelike renderings of human faces and figures. He has drawn inspiration from the surrounding Mexican & Chicano culture of Phoenix and the American Southwest, religious art, pin-up art, graffiti, and a wide range of classic artists such as Caravaggio, Mucha, and Vermeer.
Mac continues to focus primarily on creating more public art in different parts of the world, painting photorealistic canvases, and evolving his brushwork style. His intent is to uplift and inspire through careful, perfectionist renderings of both the sublime and the humble. Most especially he enjoys the simple challenges and rewards of painting. He works primarily in Phoenix and Los Angeles.