This plastic kit enables you to build it as either a Venerable Dreadnought or one of two special characters detailed below:
Bjorn the Fell-Handed is an ancient Space Wolves Venerable Dreadnought. Among the Sons of Fenris he holds many titles: "Eldest", "Trueclaw", "Revered One" and "Last of the Company of Russ" among them. He is the oldest warrior in the Imperium, and has been the salvation of his Chapter time and time again.
Murderfang on the other hand is known as The Curseborn and is a violent and fury wracked warrior who uses his murderous claws to shred any foes foolish enough to stand in the path of his rampage.