I saw some great custom samurai and decided to make my own, but without part modding. Then I came across the great pauldron idea from Nate Mac. The Vladek masks are looped around the neck and arms with lego rubber bands, the katana is also held in place by a rubber band.
The horse is pretty simple, just Vladek's horse with a samurai standard.
The unmounted samurai with a pike
I first got the idea for using Knights Kingdom face-plates as pauldrons from Nate Mac
Wielding his black katana
The back, this samurai is made completely without part modding, the pauldrons and katana are held by official lego rubber bands.