That's right. Gods and Goddesses rule the realm of fantasy more often than not. Sometimes it is just one higher being or a whole plethora. Well, pantheon, if you want to be technical about it.
Gods and Goddesses can play a significant role in your world, or they can just be casual mentions. Their involvement is entirely up to you.
They can either roam the world in avatars, walking, working, living side by side with their creations. Or, they can live high above the world, looking down on what they have created, pushing people through their lives like puppet masters.
They can be cruel or loving. Generous or miserly. Full of wrath and hate for their creations or compassion.
Maybe the gods were at war and humans, Elves and Dwarves became their champions or they were just a nasty side effect of their magical battles.
In my world, their was one creator, Ioweth. He created the earth and everything in it. The other gods and goddesses came about through the power of prayer and energy. Humans, Dwarves, Elves, Ogres, whatever the race, if there was a significant need for something like protection from bandits while traveling, their plea would be heard and out of the energies of the world, a deity would be "born".
Some choose to remain apart from the world, others choose to interact. Fizanu is the goddess of Justice and her Champion is the Black Rose. She speaks to him, gave him longevity and special weapons and he makes the world a better place for those who seek justice but are unable for whatever reason to take care of it themselves.
So think about if you want your world to include deities or just one higher being and the role they play in the lives of those living on earth.