Delta (Boris Tellegen) is a visual artist who works primarily in the field of graffiti painting. Delta significantly transforms both the traditional presentation mode of visual art, as well as the genre of graffiti painting itself.

With his graphic / architecturally inspired and visually spectacular work, he skillfuly experiments with a variety of mediums, in order to create his paintings, prints, 3D sculptures and installations.

He introduces an alien and idiosyncratic aesthetic into graffiti painting that escapes the common logo-like word IDs. Simultaneously he significantly transforms the domain of visual art by introducing an abstract and highly architectural style of painting, in a literal sense, to the street, and to the often illicit context of graffiti and street painting.
Delta's fine art paintings and sculptures have recently been exhibitied in Singapore / Malaysia, London and Italy.