Setsuna F.Seiei (Gundam 00) - Don't know how to explain >.<
Lelouch (Code Geass) - Simply brilliant.
Allen Walker (DGrayman) - Great guy. Probably would to anything to protect his friends.
Kanda (DGrayman) - Always showing his cold side to everyone but cares a lot for his friends.
Izaya (Durarara) - A little creepy but thats what makes him cool..along with himself~
Takasu Ryuuji (Toradora) - Don't really know why but i find him cool.
Kawashima Ami (Toradora) - Don't really know how to explain for her >.<
Jo (Bakaretsu Tenshi/ Burst Angel) - 1 of the coolest female characters.
Sebastian (Kuroshitsuji) - cool cool simply cool