I'm going to use JFO just because most of you said it's ugly. Ugly ones IMHO: Operator, Grenadier, Scout, and Military Police. You can't put military police on without looking like a bloody retarded tricycle-riding toddler. Operator is a very odd shape (I actually find it to be one of the ugliest early helmets), grenadier looks like an ape/monkey. While scout is more tolerable compared to the last one in Halo 3, it still looks retarded. [Edited on 09.27.2010 4:35 AM PDT]