Welcome back to MangoBot, a biweekly column about Asian futurism by TokyoMango blogger Lisa Katayama. There's a lot of buzz about Japanese contemporary artists these days. Takashi Murakami's super-cute, superflat alien-like characters are on everything from Louis Vuitton bags to the pages of io9. But he isn't the first or only Japanese artist on our radar. This week, I'm going to introduce you to two very cool futurist artists whom I love, Yayoi Kusama and Mariko Mori. One of them has spent her life covering the world with polka dots, and the other traveled the globe in her own alien pod.