Apparently Gabriel Ba and Fabio Moon have some competition for the title of coolest Brazilian artists who also happen to be brothers.
Twin brothers Otavio and Gustavo Pandolfo (known together as Os Gêmeos) are graffiti artists whose work (legal and otherwise) is commonly seen around São Paulo. Apparently they also have an exhibition in New York City. I quite like the little of their work I've been able to see online. Reminds me a lot of Hieronymus Bosch. Count this as something I post about just because I think it's kind of neat.