Mear One, born as Kalen Ockerman in 1971, is an American graffiti artist and muralist from Los Angeles, California. He started painting graffiti at the age of 16 and quickly became known for his distinctive style and skillful use of color. Mear was heavily influenced by the graffiti culture of the 1980s and 1990s, and he quickly became one of the most well-known graffiti writers in Los Angeles. 

In addition to his work as a graffiti artist, Mear One is also a talented muralist and fine artist. He has created murals and public art installations in cities all over the world, and his work has been exhibited in galleries and museums around the world.