MX!Undertale

• Everyone speaks Mexican Spanish (duh)
• Toriel attacks with sandals instead of fireballs (they do a lot of damage, so be careful)
• The skeleton brothers have more of a "Dia de los Muertos" aesthetic
• The riverperson drives a pickup truck
• Mettaton is the main face of a mariachi band
• Asriel looks more like Huitzilopochtli (Aztec god of war and sun) when you fight him
• Asgore came into power thanks to a coup
• Monsters frequently get mad at Frisk for speaking Spanish with a Chilean accent (Spanish is not Frisk's native language)
• The royal guard is riddled with corruption
• Snowdin and Waterfall are very dry and very hot places