Who created the speaking brain in Teen Titans?

The speaking brain in Teen Titans, named "The Brain", was created by writer Marv Wolfman and artist George Pérez.

It was first introduced in Teen Titans #1 (1980) as the main antagonist of the series.

The Brain is a super-intelligent being with a large, disembodied brain, often kept in a containment vessel. It has a long history of conflict with the Teen Titans, often manipulating others and using its vast intellect to achieve its goals.