Main character was part pf some experimental study, stuck in some secret underground base for years, but then escapes into some nearby encampment for smart people on summer break. Calls certain things like candy and fire by nonsense syllables denoting pleasure and pain respectively.
It's a sprt of present-day or 20 minutes into the future series. Vaguely similar to the first series of Kyle XY, only it predated it, and the main character was mostly able to talk, and I don;t think he had any super powers. Other characters try to keep him/it from getting caught by the Company, but no secret genius society that grew him in a vat for twenty years.