Charlie Sheen's Children: What Next?

March 3, 2011 — -- Just about everyone knows that Charlie Sheen is a "total bitchin' rock star from Mars." But what does that mean for his children?

While his ex-wife Denise Richards maintains full custody of their two daughters, until recently, Sheen's twin boys had been living with him and his "goddesses" -- girlfriends Bree Olson and Natalie Kenly -- at his Mulholland Drive mansion. Late Tuesday, Sheen's estranged wife, Brooke Mueller, obtained a restraining order against Sheen and forced him to hand over the boys to her.

Sheen claims he's a fine father but refused to elaborate on his parenting skills in an interview with ABC News' "20/20." While Mueller lacks his manic approach to life, she shares his problem of substance abuse (she went to rehab last year). Given that, what's best for the children?

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According to attorney and child activist Gloria Allred, who represented Sheen's former girlfriend Brittany Ashland in 1997 after he attacked her, Mueller has the upper hand.

"The drug and alcohol issues with both of them are relevant in terms of what's in the best interests of the children," she said, "but the reason that she sought the order really appears to be the threats of violence."

In documents filed in Los Angeles Superior Court Tuesday, Mueller calls Sheen insane, claims that he threatened to stab her in the eye with a pen knife, and said "I will cut your head off, put it in a box and send it to your mom" if she tried to take back their 23-month-old sons. According to Mueller's restraining order, Sheen must stay at least 100 feet away from her and their sons pending a March 22 court hearing.