From the Kamen Rider universe this spike was taken from a defeated Gorgom Mutant,
as a trophy by the Emperor. Gorgom is a cult and criminal group. The group is notorious
for its terrorist activities in the name of world domination and racial superiority over
humanity. Gorgom's Mutants are genetically altered half-beast humans possessing long
life that lasts 5,500 years. For Gorgom's human members, being transformed into a Mutant
is the ultimate reward for their loyalty.