Henry is Almanzo’s twin brother. He believes he is superior
because he’s a werewolf, although nobody else sees what’s good about transforming into a wild animal. He always complains about his family not being enough like Clyde’s (his rich friend from school who is a bad influence on Henry). Sometimes Henry is nice to Almanzo and sometimes he’s mean. Henry turns into a werewolf when he hears clarinet music, and occasionally when the moon is full.