Diavlos have strong personalities and are very proud and cheerful. They like to shop and are very fond of their owners as well. When the owner tickles them a lot they start to roll on the floor, laughing and giggling. After a while they get annoyed and start to resist. They are one of the two monsters to float, the other ones are Luvlis. Whenever they level up, they do a speical dance, which is the moonwalk. Diavlos jump and hop sometimes when they level up but they mostly moonwalk on the floor.
If the owner annoys a Diavlo a bit he turns to his side and shoves he's arms out and makes a grunting noise. Some times they disappear from the screen when they get really annoyed, they tell their owner to go away and that they don't like them any more. If the owner fed him a Scummy Bear back in early 2011, he would spit it out also stick his tongue out and go Arrrrghhh!
When adopting a Diavlo, the player will have a selctions of colours. There are eight colours on one side and eight on the other making sixteen in total.
Colour 1 (body area)
- Dark Blue
- Light Teal
Colour 2 (face area)
- Light Blue