Age: Unknown (older than Inu-Yasha)
Weapon(s): Poison Tallons, claws, Tensegia (I hope I spelled it right).
So Sessho-maru doesn't have a sword? You may think. Of course he does! His father, The Great Demon of the West, would never leave any of his sons empty handed! Sessho-maru finds out that his sword is the Tensegia. The Tensegia can bring anything living thing that has deceased, back to life. Of course, Sessho-maru thinks this sword is pretty much usless. But later on in the series, he does use it. And you would never believe it!
Sessho-maru's personality is pretty much considered "cold-blooded". That's about all I can say with out giving my true opinion of him. *Hee hee* If you look around at some clues, ((hint hint! fan fiction, and, obviously the bio)) you may be able to figure out which Inu-Yasha character that I like the most. *wink*