I like all the characters but Saeko kicks ass. =] I like Rei as well, but not when she's gets made at Komuro. Of course, I don't think your best personality shows through when a zombie apocalypse is happening.
It's kinda hard, cuz all of those teamwork moments make them all look kickass. Saeko just cuz she's a swordie, Hirano's knowledge in guns is hilarious. Rei and Komuro's fighting skills are awesome. and Saya is just cute cuz she's tsundere, fang-tan, and has pig tails.
and in my opinion Marikawa Shizuka should not even have those three votes,probably 1, because first of all she doesn't do anything in the anime beside her perverted self and that shes not even smart(takes too long for her to catch up),I don't know how she got the nursing job!!
Komuro Takashi, because his appearance is somewhat similar to a main character in the Buso Renkin series....
神様はその独り子を賜ったほどに この世を愛してくださった。 それは御子を信じる者が一人も滅びないで 永遠の命を得るためである。
kamisama wa sono hitori no ko wo tamawatta hodo ni kono yo wo aishite kudasatta. sore wa miko wo shinjiru mono ga hitori mo horobinai de eien no inochi wo eru tame dearu.
For God so love the world that he gave His only Begotten Son that whosoever believes in Him will not perish, but have everlasting life.