He is actually a Githzerai. A fairly unsuccessful Githzerai… He has always had a desire to spend time with nature, which is why he doesn't have much of the meditative abilities that the Githzerai actually possess. To achieve this, he has developed exceptional bow skills.
For a while he was in an outpost in the Underdark until a small war broke out between drow houses nearby, which is why the outpost was abandoned. As this small battle raged between the drow houses, he came across an injured bear who was unusually tame in allowing himself to be helped.
A few years later, he encountered the Githyanki from Rosymorn Monastery near the mountain pass. He was injured in the fight and left behind by his group. However, he was just able to save himself. He met his current wolf companion Z'ev, who was still a puppy at the time. But she was able to allame the Druids from the Emerald Grove, who helped him with Halsin's approval.
(Anyone who knows Halsin's story can probably guess what happened here. But Tronoth himself actually has no idea about it. And yet he still fell for the Druid!
But his quiet manner makes it impossible for him to confess so easily!)
