There is no single ruler of the universe. The concept of a ruler implies a hierarchy and control, and our current understanding of the universe suggests that it operates on more complex and interconnected principles.

Here are some reasons why:

* The vastness of the universe: The universe is incredibly vast, encompassing billions of galaxies, stars, and planets. It would be impossible for any one being to effectively rule over such a massive and diverse expanse.

* The laws of physics: The universe operates according to fundamental laws of physics, which are consistent and unchanging. These laws govern everything from the motion of galaxies to the behavior of atoms. There is no evidence of any "ruler" dictating these laws.

* Different cultures and belief systems: Throughout human history, various cultures and religions have developed their own concepts of deities, gods, or cosmic beings. However, these concepts are often specific to their own beliefs and do not have universal acceptance.

It's important to note that the concept of a ruler of the universe is often rooted in religious or spiritual beliefs. These beliefs are personal and can vary widely from one person to the next.

Ultimately, the question of whether or not there is a ruler of the universe is a matter of faith and personal interpretation. There is no scientific evidence to support the existence of a single ruler.