This was for my daughter who loves Hello Kitty but then again, it may be all because of me since I grew up loving and owning practically anything Hello Kitty. She was very adamant about having these specific characters on her cake: Tammy (monkey), Keroppi (frog), Pochacco (dog), and My Melody (bunny). I had done all of the characters except for Tammy one night, and when showing them to her the following morning, she right away asked, "but where's Tammy?" Just too cute!
The cakes were a 9" and 6" round, Strawberry/Vanilla Marbled Sour Cream Cake. Filled with fresh strawberries and covered in Strawberry Italian Meringue Buttercream (IMBC) - it smelled and tasted delicious! The recipe for the IMBC is posted under the last cake I did, the 80th Birthday Music Themed Cake. All the decorations were handmade with fondant (actually MMF mixed with Tylose).
I traced out each character over a piece of parchment paper and used them as a stencil to mold each character by hand. With a little bit of shortening on your fingers, you can rub each piece of fondant smoothing them and shaping them easily (just like the teeth on my denture cake). Use a little bit of either water or piping gel to adhere each piece to one another.