Actually there is characters with a name that starts with k and l! Light from Death Note, Kaoru from Ouran High Host Club, and Kei from Special A! I dunno about the rest though.. >>"
Zero-vampire knight Zakura-dragon ball z zack-final fantasy zaku-naruto zakura-tokyo mew mew zanza-rourouni kenshin zatch-zatch bell zenigame-pokemon zetsu-naruto zoro-one piece zoey-mew mew power zero-code geass zeff-one piece zarbon-dragon ball z zane-yu-gi-oh gx zakuro-ninja scroll and a lot more =)
zetsu-Naruto
Zabuza-naruto
Zangetsu-bleach
zauro-Mew mew power
Zoey-mew mew power
Zero-vampire knight
zoicite-salior moon
zarame-zombie loan
zero-kekkashi
Zeke-high school of the dead
thats all i can think of right now
There's zero from vampire knight , and zoro from one piece , for k there's kaidoh from prince of tennis , kei from special a , kakashi from naruto , killua from hunter x hunter , oh and kushina from naruto , kaname from vampire knight ,