Tsundere - "A Japanese character development process which describes a person who is initially cold and even hostile towards another person before gradually showing their warm side over time."

Yandere - "A Japanese anime/manga character archetype, a character that is loving, sweet and gentle but can suddenly switch to brutal psychotic or deranged behavior."

(Both taken from Wikipedia)

I ussually like the insane characters, such as: Yuno Gasai, Kaede Fuyou, Kotonoha Katsura, all of the girls from Higurashi no Naku Koro ni. That's just off the top of my head. There are many more.

i think they're more fun to process ^^

<3

I like both,but tsundere is cute! (Kagami-Lucky Star,Shana-Shakugan no Shana,Taiga-ToraDora!)

Picked because of Nagi Sanzenin - Hayate No Gotoku!

i like both but i love yandere!!! because i like higurashi, school days, mirai nikki, stuff like that ^^

Tsundere

Y A N D E R E
Like M E

Yandere! I totally love yandere :3

Tsundere!!!!!!!!!!! They are Cool!!! I love Tsundere:D

Sometimes the Tsundere annoy me with acting all angry yet really being nice XD
and in harems the main character ALWAYS ends up with them >____>

They're sweet and adorable.

Yanderes are more like my taste. Tsunderes (Except for Kyou) aren't really that interesting.