My son was very clear that he needed six minions on his cake of cakes since he was turning six! They were so fun to make and the end product was fun too! It was a dark chocolate fudge layer cake so it was delicious too!
If you have ever read about my cakes before you will know that I refuse (unless someone requests) to cover a cake in fondant. I think it tastes horrible (yes, even marshmallow fondant) and when you go to peel it off so the cake can actually be eaten all the frosting comes too. Very disappointing, especially for kids, so I use buttercream and smooth it the best I can. It makes the cake even more delicious. With that said, I do, however, love to make characters and decorations with fondant!
Minions are so basic they are really easy to create with fondant. They are just an egg shape with some britches and some eyes! There are so many fondant tools and gadgets that are supposed to make creating fondant decorations easier. You certainly don't need them for making minions. I used only my hands and a toothpick!