These Halo 3 ODST Squad Custom Minifigures by MGF Customs/Reviews are pretty special. The armour, helmets and in particular the visors look really good, and the excellent paint work picks up all the detailing. They also have some nice weapons! Michaelmgf has made a review of his customs with is definitely worth watching.
The Halo 3 ODST Squad Custom Minifigures are The Rookie, Romeo, Mickey, Dutch, Dare and Buck.