Necropillar

Concept: Baron Samedi exists in all timelines, esp the timeline in where Necropillars have claimed dominance over the world. Except they haven't. These caterpillars simply believe they are the inheritors of the world after an apocalyptic fallout caused by the "Tall Legs" (humans). They revive dead insects as part of their growing horde.

They in all actuality live inside a WWS insect-butterfly enclosure.

https://en.wikipedia.org/wiki/Phyllodes_imperialis

http://petslady.com/article/creepy-caterpillar-teeth-scares-predators-surprises-scientists <- cant find this exact image.