While HoroHoro is a victim of a bad first impression, Tao Ren is just down to unfortunate design.

Tao Ren is a rich Chinese boy brought up in a family of assassins all his life and brutally conditioned into a harsh upbringing that ultimately failed to make him the villain he was originally introduced as nor the anti hero he became later; might be because he's 4ft 9inches making him the shortest in the group and his starting outfit, the prep school uniform doesn't shout Vegeta or Hiei but Ciel Phantomhive trying to learn Chinese Martial Arts in a foreign exchange program, he's about as threatening as a yapping Chihuahua.
The single spike hair and his grander forms of dress clearly compensating for something as well.
Not off to a good start with the cast but I assure you the next character is a doozy.