No, Princess Serenity doesn't have the goofy personality at all. She was good at things like dance, she never showed much care to other ppl as well. Other than their love to Mamoru they are quite different.
She could go to ask for it. Chibiusa was a child and still helped in the fight a lot. So was Chibiusa, despite being so immature, she was still able to help and wanted to help her mother.
She could go to ask for it. Chibiusa was a child and still helped in the fight a lot. So was Chibiusa, despite being so immature, she was still able to help and wanted to help her mother.
Also what would that do. The main reason Chibiusa was able to help in the final battle of R is because she had the Silver Crystal of the future. Princess Serenity had no access to any other Silver Crystal or source of power so I am not sure what you expect her to do. Also why would she be more able to use it at that time in comparison to her Mother who had been using it for all this time? Which none the less in both the manga, Crystal and the 90s anime Usagi and Princess Serenity are the same person with the same personality. The only reason we don't see this goofy and silly side of Princess Serenity as shown in the manga is because the only scenes we see of Princess Serenity in the Silver Millennium are during serious and dire scenes.