This image is copyrighted, and falls under fair use due to:
the image being used to identify and describe the subject,
no free source exists of the object in question.
The copyright for it is most likely held by Square Enix or one of its subsidiaries or employees. It is believed that any use of this image that does not hamper Square Enix's ability to sell their games constitutes Fair Use under international copyright law. This image is also of reduced size and only used for illustrative purposes, not for profit.