Mega Man X2: X-Hunter Stage 1

Unlike in the previous game this one does not outright tell you that Sigma is the bad guy which is why this is "X-Hunter Stage 1." Of course Sigma is the bad guy but X does not realize that until the end of X-Hunter Stage 4. This stage is also different than the end of Mega Man X because all of the Mavericks are fought from a transporter room in Stage 4 and instead you fight Violen to end this stage. The fight with him is almost identical to the first fight except that now there are random blocks that phase in and out around the room which can be stood on and which also redirect the swings of his ball and chain. Soak him with the Bubble Splash and he will go down fast.