 If you liked
Elfen Lied
|
 ...then you might like
Baoh Raihousha
|
Both are action anime where an evil organization hold capture some sort of superhumans, where one of them escapes and is fighting against said organization. Both are extremly violent, even gory, but also shows some bonds between characters. While Baoh Raihousha is more shounen, Elfen Lied is more psychological.