Disney Epic Mickey 2: The Power of Two

The strategy behind the Blotworx Dragon within the Mad Doctor's Lab is simple: Thin or Paint the dragon to either complete end. Thin the green pieces to cause damage, or fill in the empty spaces to help complete the machine and win the Blotling over.

There are three stages to this fight. The first stage, you will simply be fighting the dragon, who has some basic attacks. Simply avoid them as best as you can and thin/paint your way to uncover the Blotling at the top. Once you've done enough damage/recovery, he'll change tactics and turn around, using his rear end to start attacking you. Repeat your desired attacking process and he'll soon reveal a Blotling on the side.

The third stage will involve you moving up an exposed rocky path that the dragon will create. Three Blotling generators will continuously spawn the little buggers, so you could Thin those if you wanted to prevent them from appearing. Simply thin or paint the dragon one final time, and you'll have completed this boss fight.