Modis are skorgardotur, except a lot more fatalistic, morose, and apathetic. They see no difference between life and death, existing somewhere between two states. A modis can ‘live’ one day, then ‘die’ the next, then ‘live’ as part of the local architecture before returning to ‘life’ later. It’s just a form of shapeshifting. It is what it is. Therefore, death and decay shouldn’t be feared. It should be embraced. During the war, they exported this philosophy with death magics and chemical (spore) warfare. They are considered one of the main inspirations for the school of modern necromancy.
The goals and motivations of a modis can seem completely inane and incomprehensible to other races since they are utterly unrelatable as creatures on a cellular level (in the sense that they don’t even have any). Modis never clean, leaving their living spaces to become rot-infested dumps, toxic to anyone but them. When the internet inevitably arrives, someone out there will crave a toxic goth modis GF with large spore pods, and society will never recover.