Suggested by Destroyer The BioLizard is a powerful beast that was even able to go up against Sonic and Shadow. His sheer firepower is way beyond anything that Darkside can hope to dish out. The sheer amount of lasers would also be impossible to dodge. Then The BioLizard also has his portable barriers to protect him as well. Mix all of that together and this is a very deadly battle for the Heartless. The BioLizard wins.