Invader is a French urban artist who pastes up characters from and inspired by the 1978 arcade game Space Invaders, made up of small colored square mosaic tiles that form a Space Invader character mural.

The mosaics depict characters from Space Invaders and other video games from the early 1980's. The images in these games were made with fairly low-resolution graphics, and are therefore suitable for reproduction as mosaics, with tiles representing the pixels. The tiles are difficult to damage and weather-resistant.

He started with the invasion of Paris - and then 35 other cities in the world have become components in his public art planetary invasion, appearing everywhere from on the 'Hollywood' letters to Jacques Chirac's lapel. The locations for the mosaics are chosen according to diverse criteria, which may be aesthetic, strategic or conceptual. Invader favors locations that are frequented by many people, but also likes some more hidden locations. In Montpellier, the locations of mosaics were chosen so that, when placed on a map, they form an image of a giant Space Invader character.

The mosaics are half built in advance. When Invader arrives in a city he obtains a map and spends at least a week to install them. They are catalogued and pictured. Typically, mosaics are located 10 to 15 feet above the ground, and often on street corners in areas of high visibility. 

This masked impresario’s vibrant and pixellated creations blend into their surroundings like the most masterful of street art pieces, but harken back to the fine art tradition of mosaic tilings, all while referencing modern culture and technology. One of the more prominent places where the mosaics have been installed is on the Hollywood Sign. The first was placed on the letter D on December 31, 1999. During further trips to Los Angeles, Invader has placed mosaics on the 8 other letters of the sign.

Invader has had solo exhibitions at art galleries in Paris, Osaka, Melbourne, Los Angeles, New York City, London and Rome. Since 2000 Space Invader has shown in many galleries, art centers and museums, from the 6th Lyon Contemporary Art Biennale (2001), the MAMA Gallery in Rotterdam (2002), at the Paris based Magda Danysz Gallery (2003), at the Borusan Center for Culture and Arts in Istanbul, Subliminal Projects in Los Angeles (2004). In 2011, he has taken part in the MoCA LA show at Geffen Contemporarya : "Art in the streets" curated by Jeffrey Deitch. He was the first artist arrested for taking part in the show.