Julian Subatoi Bashir, MD is a fictional character from the television series Star Trek: Deep Space Nine, portrayed by Alexander Siddig.

However, because human genetic engineering had been declared illegal in the United Federation of Planets except in cases of correcting serious birth defects, Bashir and his parents kept his procedure a secret throughout most of his adult life.

Early on, his overly enthusiastic and self-important nature made some members of the crew, such as Miles O'Brien and Kira Nerys, reluctant to spend time with him.

During pre-Dominion war tensions, Bashir is kidnapped (sometime before "Rapture," when new uniforms are introduced) and sent to a Dominion prison camp and replaced with a Changeling (revealed during "In Purgatory's Shadow").

His replacement attempts to destroy the Bajoran sun, with the goal of wiping out Bajor, DS9, and a fleet of Federation, Klingon, and Romulan ships ("By Inferno's Light").

In Star Trek: Lower Decks season 5, an alternate reality version of Bashir serves aboard the Section 31 Defiant-class ship Anaximander from the prime universe.

This version of Bashir has a brief cameo appearance in the series finale "The New Next Generation," standing on the Anaximander's bridge with Garak when the ship returns to the prime universe.