Has anybody ever created an animal in a lucid dream that doesn't exist, is very strong and protects you?

That would be AWESOME

* Gets an idea for a four legged giant tiger with elephant teeth and cheetah legs

And another question: has anybody ever created his own universe, which you could work on every lucid dream (creating your own laws of physics, f*ck gravity )

I think I'm gonna try that the next time I get lucid.