Barbie wouldn't last a day at Monster High. The latest fashion dolls from Mattel Inc. are a dramatic departure from the toy maker's most recognizable blond: As the offspring of famous monsters, the new Monster High girls are fearless, occasionally furry and a bit freaky. "They're fun characters to build a world around," said Tim Kilpin, general manager for Mattel Brands. "Who doesn't feel like a freak in high school? It started with that universal truth." Retailers say they're seeing early indications that the line will perform well. "They seem like they would kill Barbie," she said.