Regis-Xio battleships are the standard, heavy battleship that appear in the beginning of the Val-Fasq invasion.
Gameplay
Along with the other two ships that appear under Nefuria and her fleet, the Regis-Xio show up in EL as well before being replaced by more specialized ships. They are enormous damage sponges in their first appearance in ML and are extremely tough to destroy without the usage of specials. They are replaced by the cruisers until the more advanced Lange-Xio take their place.