Acidic Bulblax

This type of Bulblax has fused with radioactive waste. It has a green color and it still has its signature melting appearance, mostly due to a side-effect of the radioactive waste. It could not only eat Pikmin, but it also asphyxiates them with a deadly fluid it secretes when it feels threatened. Every Pikmin caught in the range of the attack except for Green Pikmin will be instantly dissolved.

Biology
The Acidic Bulblax's ability to secrete acid out of its body is largely due to the part that it has fused with radioactive waste. It may also be in part that it eats radioactive waste as well. However, since it is digested by the beast, its internal temperature gets hotter, which could result in a nuclear explosion of apocalyptic results. To prevent this problem, the Acidic Bulblax is usually found in colder places. Because of this, it keeps its internal body temperature much cooler, preventing the radioactive waste it eats from exploding. Should this fail, Acidic Bulblaxes sleep during the hotter months, which uses less energy, thus cooling the Bulblax down. As for the acid it emits, it is produced in a special chamber inside its body. When the radioactive waste is eaten, some of it goes to this chamber, which is prepared with a special liquid that is highly toxic, turning it into liquid form. It is then emitted out of its body by tiny pores on its back. These pores are usually closed while it is sleeping. However, when the Bulblax is threatened, it rapidly opens said pores, resulting in acid spilling over its body. This gives it protection from predators, like Pikmin. It also has the signature ability of all grub-dogs to use a powerful bite attack to subdue its attackers.

How to Kill
Only Green Pikmin can subdue this beast. Keep any other pikmin away from it at all costs!

In Pikmin: Ultimate Doom
This enemy doesn't appear, but its mutated version (the Chemical Bulblax) appears.