This is the old 1/550 Brown Bro kit. It's not Kikeroga. It's not Frau Bow either.
It has been painted without any modifications.
It is larger than the Big Zam, as expected, but the depth and width make it feel even larger.
The sculpting is almost perfect, with not a single line drawn but full of molding, and not only the wired mega particle cannon but also the main body's separation mechanism are reproduced. It also comes with a display base and a Gundam of the same scale, and at a low price, it's basically an out-of-place artifact.
Although it was an experimental unit, the unit piloted by Sharia Bull attacked and overwhelmed the White Base unit on its own...

MSN-03 Brow Bro | 121kry's Gunpla works