A common assumption among the fandom seems to be that Leto was sweet but stubborn, sometimes cheeky or naive, but generally, a good guy who wanted the best for his family. Which, I admit, sounds very plausible.
BUT! What if Leto was a murderous, power-hungry maniac, who participated in Danarius's tournament because he wanted to be stronger, and used his win to free his family as an afterthought, or because he thought they'd hold him back. And Danarius wiped his memories & altered his personality partly because he was afraid of the competition - Leto was cunning and determined enough to eventually take over Danarius's estate and position somehow, despite being a slave.
After Danarius's death, the spell breaks and Fenris remembers who he used to be, and has to deal with it. Or he reverts to who he used to be, and others have to deal with him.
Fenris regains his memories; Leto was a monster.
BUT! What if Leto was a murderous, power-hungry maniac, who participated in Danarius's tournament because he wanted to be stronger, and used his win to free his family as an afterthought, or because he thought they'd hold him back. And Danarius wiped his memories & altered his personality partly because he was afraid of the competition - Leto was cunning and determined enough to eventually take over Danarius's estate and position somehow, despite being a slave.
After Danarius's death, the spell breaks and Fenris remembers who he used to be, and has to deal with it. Or he reverts to who he used to be, and others have to deal with him.
http://dragonage-kink.livejournal.com/15999.html?thread=61493375#t61493375