Bulblord is the first major boss in Pikmin Adventure. He is a combination between the main series' Emperor Bulblax and Empress Bulblax.
Strategy
Bulblord is an incredibly-large Mecha Bulborb that has weak spots all over him, but his bulk and attack speed making attacking him difficult.
His main attack is a charging-bite attack in which he dashes across the whole stage in a single direction. His other attack involves him retraction his legs and weakpoints and roling from side-to-side across the stage. It is advised to use a similar stragety as the one used to defeat the Orange Mecha Bulborb, as getting him to turn around in single player is hard; simply have Olimar run behind him, causing him to turn around. While still dodging his attacks, get the other Mii Pikmin to attack his weak points.
After all his weakpoints have been destroyed, he will gain 2 new ones on his knees. It is best to use the distracting method to aim at these, as his will begin to move much faster once these are exposed.
Once both his legs are destroyed, he will helplessly roll onto his back, revealing his largest, final weakpoint on his underbelly. Simply throw all your pikmin at it and destroy it, which will causing him to roar in agony before explodion in Nintendo Land Coins, the park's currency.
After defeating Bulblord, it is possible to unlock him as a statue in the Park Plaza.