New cat

My humans brough home an additional cat last week.  His name is Vader, he's black (at least they chose one with a good color) and he's the same age as me.  Obviously not as cool as me (no BSD named after him!).He's got this kink at the end of his tail.  I tried to look at his tail further and he hissed at me!  I can hiss at him, not the other way around.