Not all helmets, but majority are ugly as sin. Raid helmets look ugly (who wants to look like a bug?),(basing this off of Crota and HoW thumbnail) VoG helmet is...ok. Sure it looks like a Goblin but still a bug like Goblin.
Best helmets are; Mask of the Third Man and Symbiotic...personally.
Why do the Titan and Warlocks have the cool helmets?
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I like the helmet that the exotic Symbiote helmet is based off of. Not the exotic helmet itself since someone referred to it once as the world's worst tumor, but that base helmet is my favorite for the Hunter.