*The "Sinister Serpent " seems to be based on the Japanese [[wikipedia:cryptid|cryptid]], [[wikipedia:Tsuchinoko|Tsuchinoko]], a [[wikipedia:snake|snake ]] wider in the middle than its head and tail. According to a legend of the Tsuchinoko, it has the power to control minds whereas in other legends it just has the power to lie very very well.

* This card is the only [[Reptile]]-[[Type]] monster to be Forbidden.