Name: Hummo
Task: Keep the atmosphere clear
What he does: Complain about the pollution
Likes: Backpacks
Body: Purple, nails, yellow spots, atmospheric geysers
Ability: To renew oxygen
Food: Granivore and practices Geophagy
Personality: He talks a bit slowly, but he gets the job done

Hummo has six atmospheric geysers at the back that help renewing oxygen. He needs to eat soil substances like clay, so he can get phosphorus from the soil and produce new oxygen. He doesn't like them, so he hides them in a backpack he found. He seems to like to talk when he insists to slowly complain about pollution.