Warforged

Warforged were a race created by intelligent inventors. They proved useful, and the knowledge required to craft them began to spread throughout Midrial. Their uses grew beyond war machines and soldiers, but their slavery has yet to end. Even now, the Warforged live mostly in servitude. They are not naturally born, and are more often used as tools than they are seen as equals.  
Lifespan
Unknown
Average Height
Varies based on creator's preferences