That's Paper, one of Mashima-sensei characters. He's a character in Rave Master Plue's Dog Diary. In the story, he is Plue's owner.
I will tell you the characters one por one. Look at the pic.
- The white one --> Plue.
- The blue one --> Paper. He has no name, just call him Paper. He's the one appear in your question.
- The one eating banana --> Tono. He appear several times in the background of FT anime, like in Erza vs Azuma.
- The cat --> Tamiko. She's one of the gatos that Gajeel found when he procurar for a cat. (
link) She's also appear in the animê as well.
- The granny --> Obababa-sama. In FT, Mashima-sensei made her as Lamia Scale's guild master.
- The lagarta, caterpillar below Obababa-sama --> Roji. He's Tamiko's owner and Paper's rival. He's kinda like the antagonist of the series but he's really funny as hell.
The rest are minor characters.
Well, that's it. They appear often in Fairy Tail. Example, in the episode Lucy vs Bickslow. After Sagittarius destroy Bickslow's dolls, he immediately get new dolls, which is the bonecas of Roji, Paper, Tamiko, Obababa-sama, and the urso (Kuma). And like I said before, some of them also appear often in FT's animê background (Paper and Tono).
So, stop calling them 'weird creatures' (well, all of them are weird, that's true). But still, they're Mashima-sensei characters :)
