Like, say, making extremely ugly avatars. These examples, collected by Kotaku, are unfortunate even for the game’s irradiated, post-apocalyptic hellscape. Making a particularly ugly avatar ...

See, for example, the paper by Zoll et al. • Unrealistic human avatars that resemble a real person do not necessarily fall into the uncanny valley, as a case study by Henriette C. Van Vugt et al.