Krios

"Once a thief, always a thief."
"Only a fool believes they can't be redeemed."

Krios joined the clan when Salem pretty much dragged him home. Of course, this was met with quite a bit of resistance when Tank saw him and simply asked if he was "having fun robbing people blind". Salem- of course- jumped in to defend Krios, but he was more or less accepting;

"Why are you just letting them accuse you of something you didn't- and wouldn't- do?!"
"Because dragons will believe what they want, and nothing I do will change that."
"I refuse to let you starve or die just because they won't listen. I'll make them listen."

After a very, very long, very loud 'talk' Salem had convinced Manix and Rune- who had no problem giving Kiros a chance in the first place- to let him stay until he did something that would force them to evict him. Krios swore that day to them that he'd never do anything to damage the trust put in him by the clan.

That doesn't mean that he's going to stop stealing though, he's just not stealing from anyone who comes through the den. After a period to confirm that Krios was telling the truth and he wouldn't steal from the clan, they're content to look the other way when he appears with ill-gotten gains.