Gloria is the sister of Loriya .
She is also known as the Traveller in the game. She will open mythical Lands for you. If you can solve Gloria's portal, you will be a more valuable and powerful vamp.
When you are doing a Gloria mission, you should not go back to the castle without completing it. If you do, you will lose everything you have achieved from Gloria.
If you die during a Gloria mission, you have to start it from the beginning. So I suggest you, be careful about Gloria's missions.