Pseudonym: A fictitious name, especially a pen name.
An author's name should be just as memorable as the title of his or her book. Some authors you will know that their name is fake by just reading it.
The author of this book is Galaxy Craze. I have a feeling that's not this person's real name, but I could be wrong.
You can have a fake author name, or you can put your actual name :) In my opinion, if you don't have a name a reader can easily remember, then you should have a fake name. But it's your decision so just have fun with it :)