Samurai_Heart
Member
Alter do re-release. From memory it's usually really popular figures that get one though. Dizzy, Momo, Yagyu Jubei and Naoe etc.
As for how figures are made. At GSC they're handpainted:
Mikatan's factory field trip part 1
Part 2
Part 3
Part 4
Finale
Felt wrong but I loled thinking that the faces was used not to hide their identity but their disgruntled faces XD