Bospider

Bospider (ボスパイダー) 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 he must stay on the move. It has a strong defense, but a red core on its abdomen (it's weak point) will be exposed when it hits the ground. Its main weakness is Shotgun Ice, but it is difficult to hit the boss with it (or the Hadouken) in time to hit the core when it appears. When it dies in the remake Mega Man Maverick Hunter X, it explodes in a "squashed beetle" pose.