My sister LOVES Astroboy! She requested for an Astroboy cake for her birthday. I wasn't very confident with my figure-making skills yet at that time, so I created a cake for her with a 2D image.
I chose an octagonal shape for the cake just for extra quirkiness. It's chocolate butter cake with coffee buttercream inside, covered with yummy chocolate fondant.
I piped the Astroboy image out of royal icing on top of a gumpaste circle.
The buildings are created out of gumpaste, and details all piped with royal icing.