Otto is aware that an octopus living on a farm is a little strange, but he doesn't care about that. He enjoys farm work and is also very good at it. Having eight legs makes the chores go by faster, which he demonstrates in Seeing Double.
Didi describes Otto as a hippie, and given his relaxed, carefree attitude, she wasn't too far off the mark. Otto was only on-screen for a few minutes, so not much is really known about him; He was very friendly towards Edie, though, and seems to be an all-around pleasant pet.
Almost all of Otto's body is different shades of periwinkle. His head is a lighter shade with dark spots, and his tentacles are a darker shade with light spots. His suction cups and the undersides of his tentacles are a dusty pink.
Otto's eyelids are droopy, reflecting his laid-back nature. He wears an orange headband and a wig made of seaweed. He also has a brown beaded necklace, but since he spends most of his time in a water trough, it isn't usually visible.