Greater Ookoo

The Greater Ookoos is a species of primate appearing in Pikmin: Spark where they rule over a group of their lesser kin. They are the combined bosses of the Fertile Savanna are and are the fourth main boss of the game. You fight three of these at once in the middle of a large strange device with its lesser counterparts hollering like crazed sports arena attendees. The trio of large monkapes team up and gang up on you using teamwork to try and take down you and your pikmin. Using their tails they can toss each other like large rolling boulders to crush your squad, but they can also lob rocks and fruit, the latter of which releases a puddle of poison sludge. Each individual Ookoo can also do tricks off what appears to be a giant chain activated propeller to travel from one side of the room to the other, these chains are too high for most Pikmin to grab and too heavy for Winged Pikmin to move which means only Yellow Pikmin can pull them, this activates the propeller and stuns any Ookoo that grabs it allowing one to defeat on of the primates. When one goes down the other two summons Lesser Ookoos to assist them in fighting the captains. When another goes down the other ookoos flee and the last greater ookoo digs up a giant crystal to both shield itself and crush the party. By using Rock Pikmin you can smash the weapon and the ookoo, powerless, tries to flee. But after defeating all three the  which is worth  which can allow the collected liquefied Sparklium to be converted into consumable pills. This also allows the ability to upgrade the ship and head to the Rust Labyrinth.

Ultra-Spicy Differences
You have to fight six Greater Ookoos instead of just three, the fight progresses for each two Ookoos defeated, the arena is larger to accommodate.

Trivia
The Medicine Press Express is a mechanical meat grinder