I love, love Rachel Ortas‘ cute little illustrations of her outer space characters Ai Ai. (Funnily enough, in Mandarin Ai means love). The wonderful Clapham Books has a really nice window display of Okido magazine and Ai Ai monsters at the moment.
The Ai Ai remind me a little of Yoshitomo Nara‘s work where the characters are seemingly cute and innocent but have a darker side to them. The key elements to making successful characters for children and adult.