Bospider

Bospider (ボスパイダー), known as Bosspider in the remake Mega Man Maverick Hunter X, is the giant spider boss at the end of the first part of the final stages in Mega Man X and Mega Man Xtreme. It sends out mini spiders and creates random paths down its four rails to crush the player, so you must stay on the move. Its method of navigation is a parody of Japanese lot-drawing, or Kujibiki. It has strong defense, but a red core on its abdomen (its weak point) will be exposed when it hits the ground. Its main weakness is Shotgun Ice, but it's difficult to hit the boss with it (or the Hadouken) in time to hit the core when it appears, as it is only exposed for a short time. When it dies in the remake, Mega Man Maverick Hunter X, it rolls over and explodes in a "squashed beetle" pose.