From here:
http://www.denverpost.com/news/ci_2...rait-jessica-ridgeway-suspects-family-emerges
"Like other neighbors, Fox found Sigg the type of kid who would stop and chat in the driveway.
"He was wonderful. He was a respectful kid," she said."
<snip>
"We'd seen the Sigg boys down here," Garone said. "They were very nice, very polite."
<snip>
"A few weeks before Jessica went missing, Isaiah said, his antics with his slingshot annoyed a group of teenagers playing football in the open-space area and Sigg, one of the players, began bullying him."
Some of the prior things people have said about him, "egotistical," "brilliant," "creepy," were in this article too, I just didn't quote them in the interests of space. I find it so strange how the descriptions of him vary so widely. Of course there's always the "we're shocked, we had no idea!" type responses because really, it's not that common for someone to come out and say "ohh yeah we kinda thought the kid next door was probably a murderer."
IMO though it's striking to be to see him described as anything from brilliant to polite/friendly/nice/respectful to anti-social, super creepy and even a bully, all from people who either lived or went to school near/with him. It makes me wonder if his personality changed rapidly, depending maybe on what situation he was in, who he was talking to, etc.? Or maybe he changed dramatically fairly recently?