The Shi'ar (/ʃiːˈɑːr/ SHEE-ar) are a fictional species of aliens appearing in American comic books published by Marvel Comics. The Shi'ar Empire (or Imperium), is a vast collection of alien species, cultures, and worlds situated close to the Skrull and Kree Empires. The Shi'ar are one of the three main extraterrestrial empires depicted in the Marvel Universe, alongside the Kree and Skrulls.