How do you defeat the Biolizard in Sonic Adventure 2 Battle?

Answer 1

Do not go too close to his head or tail as he chases you, be sure to jump over the gap in the path, when he stands still jump on the rail that leads to his life support system(red glowing sphere) and homing attack it. Then the Biolizard will start to shoot dark orbs at you, somersault under or jump over to dodge the orbs. If you get hit the biolizard is nice enough to give you enough time to pick them back up. Afterwards you get back on the rail to homing attack the life support system. The biolizard will repeat this again and will summon up red eggs surrounding him, homing attack on the eggs until you reach the top and homing attack the system again. On the last hit the biolizard will make the area turn zero-gravity, follow the flow of the eggs and make your way into the centre, there are rails you can either go on them and hit the system or get hit and just go straight for the red circle while in your temporary invulnerable state.