Summer or Wyld, both could be interesting. I can run with either one. I warn you, I play me some mean faeries. I've incorporated Dresden-like fae into my D&D games, and the players are scared of dealing with any of them.
Which is totally as it should be, IMO. That's one of the things I especially like about the Dresden stories -- the faeries are a lot more dangerous and akin to the older tales about them, not the happy-go-lucky, cute little things.
Anyways, I had best put down the character info I've worked out so far.
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Name: Logan Harcourt
Template: Changeling, Ogre.
High Concept: Big Son of a Wyld Ogre.
Trouble: Protector of the Weak.
Logan was "adopted" as an infant. Really, he was left on the porch of a grown changeling woman in Atlanta who had taken in children of Faerie heritage on a regular basis. The woman, Michelle, had refused to make her Choice, remained fairly neutral regarding the Courts, and was at least allowed to raise some of the unwanted changeling children. Logan was not the first and definitely not the last to come into her care, where he grew up in a sizable, crazy, changeling-filled household.
Aspect: Big, Weird, Changeling Family.
Signs of his ogre blood showed fairly early, as he became one of the biggest and strongest boys in the neighborhood. He also became something of a protector to his "siblings" in the house. He tested out of school early (16/17) to get a job and to help Michelle with keeping the house in good condition. The next year, one of his "older brothers," Sullivan, who had fully embraced his Winter Troll heritage came back around. Sullivan was out to strong-arm Michelle into pushing some of the youngsters in her care to Choose and go Winter. Logan took an iron-headed sledgehammer and taught Sullivan his mistake, though he refused to kill the young man/troll he still saw as a brother.
Aspect: Really Good With a Hammer.
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For the First Case, I was thinking something about Red Court servants pushing some new drug derived from the narcotic saliva, with the dealers really aiming to get a younger crowd hooked. Naturally, Logan would have a big problem with such a thing.
Power-wise, I'm looking at Inhuman Strength, Toughness, and Recovery (Catch being either "trappings of Winter" or the full "cold iron") and possibly Glamours. Tinkering with Skills is stalling me a bit, but they'll get there.