I'm going to leave it as a tie too - because choosing will cause the universe to implode (says Hatter) and I don't want to intrude on Kano's bracket starting tomorrow so I'm going to declare a tie. Leave a note in the comments if you think one of them seriously deserves it more. Otherwise, the Guys of the 90s most iconic are:
Brad AND Leo!!
Congratulations guys, and thank you to everyone who participated in the voting, and thanks to Dylan and Mrs. Fletch for all their contributions to the choices and seeding!