Wait, maybe the user is referring to "Mongol" as a character. In the G.I. Joe comic book universe, there is a character named Snake-Eyes, whose twin brother is named Akar, who was brainwashed into becoming the villain known as Retro. However, in some versions, he is also called Mongol. Let me verify the background. In the Marvel comics, Snake-Eyes is the twin brother of Akar, later known as Kobra Vida, who was transformed into Viper into Retro, a cyborg assassin. The name Mongol might be a regional term or a mistranslation.