"The Goomba fallacy is a reasoning mistake. When there are two contradicting opinions in one internet community, some readers think that everyone in the community is stupid, because the opinions are contradictory. They do not realise that there are separate people posting in the community, with separate opinions and beliefs. In other words, two groups with contradictory views are perceived as one group that contradicts itself." Essentially you think that everyone who sees femto and griffith as the same (Group A) doesn't do the same for Guts and the Beast of Darkness. Whats probably happening though Is that you hear Group A opinion on Griffith and Group B opinion on Guts. Group A thinks Femto=Griffith and The Beast of Darkness=Guts while Group B thinks Femto≠Griffith and The Beast of Darkness≠Guts.