Yeah, they have several names but in my country they were know as Samurai Warriors. But not only the hair but the colors too, the guy in green here has exactly the same hair as the guy in green there, as does the guy in blue, the guy in red and the one in yellow (although he wears orange in samurai warriors, or troopers, or ronin hehe). Anyway, it just had too much resemblance and I though there might be any connection, like same author or something like that, but I guess not.
Also Saint Seiya is one of my favorites of all time, grew up on that.