Bake a sheet cake the size you will need. Draw Beaker's shape on the cake using an icing filled bag and #3 or #5 round tip. Leave off the top of the hair as this will be created from the sides that you cut away. From the sides that you cut away cut top of hair and put in place with icing used to make it stay.
Using a star tip #16 or #18 and orange icing, fill in the hair and nose. Fill in the mouth with red icing.
Make a round mound for each eye. Pipe a small dot for pupil in center
of each mound.
Fill in the face with a flesh color or light peach.
Fill in the shirt with white icing with piped green icing stripes. Fill
in the tie with the same green icing as the stripes. Fill in the coat
with olive green (green and yellow and a dot of black mixed together -
or mix yellow with a small amount of black.)