No, Pluto is not a brother of Zeus. They are both children of the Titans Cronus and Rhea, but they are not siblings.

Here's the breakdown:

* Zeus: King of the Gods, god of the sky and thunder.

* Pluto: God of the Underworld, also known as Hades.

Zeus and Pluto are brothers from the same parents, but Pluto is not a brother of Zeus in the sense of being close or having a strong relationship.

The relationship between Zeus and Pluto was often strained as Pluto was forced by Zeus to rule the Underworld, a dark and forbidding realm.