Achieved when Raider ripped off one of King Ghidorah's heads and ate it, he absorbed the electrical power from it....aswell as some of the thoughts, memories and psyche of the brain.....resulting in him achieving his Physically Largest transformation, even bigger than Godzilla(2014), however, due to absorbing the brain matter, also making it his most violent and dangerous transformation(doesn't help that a consciousness of Ghidorah whispers thoughts in his head and annoys him now), and about on par with his Dragon God Form more or less(if not stronger)

(Yes those are nine heads)

Belle2465
Saiyan_Demon_Goddess
Luc_chan
Zoruatrickyfox2
Medaka-San