Sammy makes his first appearance in Slim City, however he was in the Japanese pilot.
In the Japanese version, even after all the exercising, Usagi weighed herself and was shocked to see that she had still gained weight. The North American dub changed it to Sammy having tampered with the scale as a prank.
In Japanese Serena's bag of dough-nuts was actually dumplings filled with meat.
The water in the tub was changed to cover more of Serena for the English dub.
There were no Yoma, and Jedite was able to accomplish getting energy - what little he did - without one and in general.