Submarine Eggman II Is The Boss of Oil Ocean Zone, as it appears at the end of act 2.
He acts just like Submarine Eggman l, only he has a snake-tail-lazer thing that is detachable, as it launches at sonic before FIRIN' HIS LAZAR 3 times before reappearing on the other side of the screen-just like Submarine Eggman l.
That's really it. 8 hits, Eggman flees, open capsule, boom. Metropolis zone. (I totally butchered that.)