Karna was the last Survivor of the glorious clan of Light element users called the ' Suryavanshi '.
Once a dominant clan of many outstanding warriors , and with a lineage of ruling for over 600 years with many big name emperor's the clan was considered one of the unshakable pillars of the Everlon continent , however then a forbidden user was born within their ranks.
Born with the power to control the sun itself the child was found out by the world order and the entire clan was hunted down mercilessly by the balancers.
It was one of the biggest fight in the history of the continent as it spanned over 20 years and saw millions dying on both sides.
The suryavanshi vowed to topple the world order but in the end they were defeated and the once glorious empire was broken into 7 small kingdoms and many smaller independent villages , a collection of whom was later unified by Alexander to form the kingdom of Avalon.