Charlie Sheen is rolling the dice today, bringing his remaining goddess to court for his custody battle royale with Brooke Mueller.
Charlie was cool, calm and collected ... even fist-bumping photogs on his way into the L.A. County Courthouse this morning as the shutterbugs wished him luck.

Charlie is going for broke, asking the judge for full custody of twins, Bob and Max.

We're guessing Charlie wants to show the judge that goddess Natalie Kenly is just a normal chick who happens to be into 3-way relationships ... but only sometimes.