Model is from the Five Star Stories .The Neptune is the personal mortar head of Lader branch of the imperial family.
Originally piloted by Lader VIII, it was later redesigned and upgraded by King Lader and a collection of the galaxy?s finest meights (this is where its output gets the upgrade from 1.4 trillion horsepower to 1.5 trillion).
During its redesign phase, the Siren moved on its own to protect Christine V, daughter of legendary Kneu Syltiss knight Barbeleus V, from capture.
Witnessing this, the emperor decided to award the Neptune to Christine upon the day of his retirement, and with it came the title of “Highlander”, which belongs to the Fillmore Empire?s finest knight.
