This Weekend Japanatainment is dedicated to our favorite suicidal sensei and his easily customizable opening. You might of seen some of these videos before, but never have you seen them all at one place; and that is where I come in. The video above is one of my favorites, using characters that hail from One Piece; but what makes it really cool is that it uses characters that have yet to be introduced in the anime. The rest are a concoction of anime series that you would never expect to see in this kind of opening; and they are waiting for you after the jump.