Kai Leng signed up for twitter after a rewrite in Cerberus's protocols allowing him to sign up for twitter. His official Twitter account is @LengTheSnake
Kai Leng may hate more than just aliens, as he has argued with Shepard's Hamster Boo before. He also has lost the location of Cerberus'es main base on an occasion.
Although in the past he has shown himself to be more of an individual rather than the Illusive Man's puppet and does not hate aliens as much as the Illusive man would have hoped. He will steal your dignity, your life and your cereal. His personal favourite being Krogan Krunch