Amiba is a minor antagonist in the anime and manga series Hokuto no Ken (Fist of the North Star). He is a self-proclaimed genius scientist and martial artist who performs cruel experiments on innocent villagers, attempting to master the secrets of the Hokuto Shinken martial art. Amiba impersonates Toki, one of the main characters, to manipulate others and spread chaos. However, his lack of true skill and arrogance ultimately lead to his defeat by Kenshiro, the series protagonist.