Marzipan is the first droid sent by Emerald to help fill Tokyo's vulnerable spots with dark energy. She has the power to spray people and turn them into cakes. She appeared in Sailor Moon R Episode 29, Emerald Takes Over.
When Emerald summoned Marzipan, she battled the Sailor Scouts, and was too fast for them to hit with their attacks. She turned them into cakes, but Tuxedo Mask attacked her and broke her spell. Giving a hint as to Marzipan's weakness (since she is made of cake, she can be melted), Sailor Mercury used Shine Aqua Illusion to damage Marzipan, and Sailor Moon destroyed her with Moon Scepter Elimination (which, again, she uses the word "Activation").