He is... I need to come up with some epic badass backstory.
Toss ideas my way.
u could adapt part of Conan's story somewhat to ur specific character, since orcs are minority in realms.
"... Born to a family of battle-worn (orcish) villagers, Ugha-Bongha had his first meeting with humans at the age of 8, when the quiet town of Bongha-Ugha was attacked by the evil ruler of an Imperial Cult, Antaros Mnemonoth, and his savage warriors. Aftrer having watched his parents' slaughter, the young orc was engaged in a life of early slavery.
The long years of brutal subserviance were not enoguh to impair his superior physical abilities, and his 'masters' saw his potential as a gladiator. During one of these fights Ugha-Bongha manages to break free, vowing on the honour of his loved ones a vengeance yet to be sung in the echoing rhymes of Tamriel..."
If you read some of the bio's created by folks here, u will find good stuff
PS: English is not my mother language, so some wording may sound funny / wrong, but u got the idea.