Bad Badtz-Maru (バッドばつ丸 Baddo batsu maru^?) is a male penguin with spiky hair. His birthday is April 1 (April Fool's Day).^[2] He is one of the few Sanrio characters that is marketed to both males and females. In Japanese, "badtz" (batsu) is a term for "X", the cross signifying a wrong answer. "Maru" means circle or "O", and signifies a correct answer. Thus, his name figuratively means "wrong-correct," and is frequently represented by "XO". Badtz-Maru has many different facial expressions and poses, but a common expression is of pulling one eye down and sticking out his tongue, a gesture equivalent to blowing a raspberry.