Arachnon

Arachnon is a foe from Bloo Kid 1.

Description
Arachnon is a circle-shaped spider with a red stripe on its forehead. It appears clinging on ceilings, when Bloo Kid walks below it, it dives down to attack him. If first appears in World 8.

Calm Arachnons
It looks similar to the normal Arachnon but it has a more passive expression and float up and down aimlessly.