Possibly Loki from Norse Mythology, depending upon the interpretation.
Taken from his home and forced into being a bastard 'son' to, quite frankly, a jerk (Odin).
His power was probably 4th greatest in the whole of Asgard (Odin, Heimdall, Thor then Loki) yet he was way down on the pecking order simply because he was a bastard.
He is given a role in which he is to cause mischief, then gets chewed out when he 'goes too far'. A mischief-maker with powers of a God wasn't supposed to go all out in his job? Again, Odin is really not so likeable.
It took being kicked out of his home for the guy to get a break, he finds a nice girl (Angrboda) and settles down, getting himself three kids (Fenris, Jormungand, Hel).
Unfortunately his troubles aren't over, as his foster-father/babynapper decides he just isn't done being a douche, takes each of the three kids and visits some bad news upon each one.
The youngest (Hel) he banishes to a crappy desk-job in the realm of dishonourable death, never to return until the worlds end. Fun times.
The middle child (Jormungand) is thrown into the sea. Nothing else really to say here, Odin tried to drown the kid.
The oldest and most promising (Fenris) is sent to a dungeon forever, with an unbreakable rope preventing him from opening his mouth further and a sword between his jaws preventing him from closing them.
Finally, the guy is hunted down by his tool of an older half-brother (Thor) and his jerkjock buddies when he is out having a nice quiet swim. He is chained to a rock for eternity, his eyes forced open and a snake drips venom into them forever.
That's one interpretation of Loki's life, and it could be seen as pretty damn tragic.