The below description is taken from LEGO.com.
“A sword is only as strong as the heart that wields it.”
The Samurai Warrior is a legendary champion, famous for both his skill with the sword and his deep sense of honor. He will never break a promise or refuse to help a stranger in need, and the only reward he ever accepts for his noble deeds is a nice cup of hot tea afterwards.
The Samurai Warrior’s only problem is that he’s so extremely serious all the time. You can try telling him a joke, showing him a funny picture or even tickling him, but he’ll never even crack a smile. It’s rumored that he once laughed at one of the Circus Clown’s gags, but if you ask him, he’ll absolutely deny it!