Grafitti

Invader (born 1969) is a French urban artist who pastes up characters from and inspired by the 1978 arcade game Space Invaders game, made up of small coloured square mosaic tiles that form a space invader character mural. He does this in cities across the world, then documents this as an "Invasion", with books and maps of where to find each invader. This could just be the work of an imitator.
Manchester, North West England.