Invader (French, b.1969), also known as Space Invader, is an Urban artist originally based in Paris. He affixes mosaic images of characters from the 1970s video game “Space Invaders" in cities around the world. Once a work is completed, Invader records it as an "invasion" and creates accompanying maps and reference books to indicate the location of each piece. Invader began these urban, outdoor installations in Paris in 1998, and continued to "invade" 31 other cities in France, followed by an additional 22 cities across Europe. Currently, cities in the United States, Canada, Asia, and Australia are also home to examples of Invader's work.

The mosaics are made using weather-resistant tiles, which represent the pixels used for graphics in early video and computer games. The installation process typically takes at least one week, including scouting, recording, and mapping locations. One of the most conspicuous locations to feature works by Invader is the landmark Hollywood Sign in California; the first mosaic work was mounted on the "D," on December 31, 1999. In addition to mosaics, Invader creates similarly pixelated works using Rubik’s Cubes.