Female: Yuno Gasai from Mirai Nikki, secondly Lucy from Elfen Lied
Male: Pan from Island, secondly Tyki Miki from D.Gray-Man

[img]http://img120.imageshack.us/img120/1915/islandv07104kl7bf4.th.jpg[/img][img]http://img518.imageshack.us/img518/2749/dgraymanv05ch43p15kr3km4.th.png[/img]

they are enjoyable killing

wait.. I think, there is more..

known as Lucifer / Killy69 / Guts / L41n / Lain Iwakura / Schrö.

Male:I don´t know one 😕
Femal: No doubt Yuno is number one second is Lucy

For the sane people I am insane,for me the sane people are insane!

I haven't read really read any manga that has psychotic characters 😐 oh well...
Male - Light: Death Not
Female - Sekai or Katsura: School Days

Ichi from Ichi the Killer.

Protect Independent Film
All that we see or seem Is but a dream within a dream. - Edgar Allen Poe

Imagination rules the world. - Napoleon Bonaparte

All men are born with a nose and ten fingers, but no one was born with a knowledge of God. - Voltaire

Male: Orchimaru (Naruto) and Light (Death Note)
Female: the mother from Yoo Ah Dok-Jon

There are a lot of others.....I just can't think of their names at the moment... 😢

Female: Rena,Shion (Higurashi), Lucy (Elfen Lied)
Male: Light (Death note), Sasuke (Naruto)

Quote from Dr. Love

All characters in MPD Psycho. 😀

co-sign these nuts made Light Yagami look like a humanitarian

[img]http://img40.imageshack.us/img40/4158/1205047355313.gif[/img]

Male >> Johan from Monster

Female >> Choose later

Looking for this!!!

[color=blue]A new day is beggining
[/color]

Male - Claire Stanfield 'Vino' 'Rail Tracer' from Baccano
Female - Mitsuko "Hardcore" Souma from Battle Royale

Male: Friend from 20th century boys
Female: Def. the chicks from school days

It only takes one bullet

I would say characters from Deadman Wonderland, Freesia, and Tajuujinkaku Tantei Psycho.

[img]http://i404.photobucket.com/albums/pp129/hehsy5sy5/Untitled-1copy-1.jpg[/img]