I cannot speak for Misty but as far as I know this is the person who is a facebook friend of Pauline M. I’ll try and find the complete reference.
A German musician and IT-technician, who got to know him in 2005 after a gig in a music bar in Lagos, learned that B. also has an uncanny side.
The SPIEGEL reached
Christian P., 53, via Skype in the small town of Kampot in Cambodia.
I met Christian from time to time, he fixed my car, I helped him with the TV," he says. Sometimes they would drink wine. "He was quite a messie. The house in Praia da Luz was totally untidy and unkempt."
During a visit, he noticed three stacks of foreign travel documents. "There were 30 to 50 passports lying around in plain sight." When asked about this, Christian B. told about thefts in Praia da Luz and the surrounding area. "He told us that he went on tour from time to time, and climbed up facades in the process.
This is consistent with the findings of the investigators. According to this, Christian B. financed his life in Portugal in the mid-2000s not with odd jobs, but with burglaries and thefts. In April 2006, he and an Austrian accomplice were caught red-handed at a gas station when they were siphoning diesel from a truck. A Portuguese court sentenced them to 258 days in prison.
"I visited him in prison at the time," Christian P. recalls. "He complained about the poor prison conditions and the lousy food. Because there was no alcohol in the prison, I was supposed to bring him oranges sprinkled with vodka, but I didn't want that. That made B. angry.
During his imprisonment, B. received notice of termination for the house he had rented in Praia da Luz. Christian P. wanted to help his friend and place a few boxes for him. "But there were such disgusting CDs with dirty movies like animal porn, more than a hundred CDs," says Christian P. He threw all the stuff away. Christian B. didn't want to see him again afterwards, "he was so angry".
https://www.spiegel.de/panorama/justiz/fall-madeleine-mccann-verdaechtiger-die-akte-christian-b-a-00000000-0002-0001-0000-000173444515