Place the three chocolates in three different bowls and melt in the microwave oven for a minute.
Mix them in one bowl and heat again in the microwave oven for about a minute.
Remove the bowl from the microwave and add powdered sugar and whisk well. Add gelatine and mix.
Add whipped cream and mix well.Transfer into small serving bowls and chill in the refrigerator for an hour. Serve cold.