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Result of Symmetrical Docking between HyoRyu and RaiRyu when their SympaRate exceeded 200%. This level was made possible when one or both of the robots were charged by The Power, a mysterious energy taken from the planet Jupiter. His abilities include "Aurora Illusion" (which makes illusory ice copies as decoys) and "Thunder Blizzard" (which functions exactly like Shuang Tou Long).
When GenRyuJin uses "Thunder Blizzard" in tandem with GouRyuJin's "Burning Hurricane", the result is called "Maximum Tou Long".