When Masquerade left Alice's body, Alpha Hydranoid became Alice'sGuardian Bakugan. With Alice, it has been far less destructive and aggressive towards his opponents including Drago. This is the only Bakugan that has had two masters that it really responded with, not just being taken.
When Alpha Hydranoid fought alongside Alice against Rabeeder, Rabeeder ended up crystallizing him and almost transforming him into a statue, but since his heads were still un-encased they figured out that they could still use some of his abilities, getting out of the crystal after taking her down. Alpha Hydranoid's three heads each have their own voice but they all have the same personality.