I love it too!! So cute!!! I think it's not a real anime character, but something like hello kitties etc?
I'm not so familiar with it, but I know its short anime is aired every morninig of weekdays.
https://www.youtube.com/watch?v=Ezz67FXms8M&index=3&list=PLFNUyl__hoIg1iIxNsf28sPori9P6CZoT
It's a bit difficult to explain its laziness nuance, sorry.
But I remember some of Gudetama's comments:
"I'm not aggressive type...."
"Challenge is not in my dictionary...."
Just the opposite character of Yuzuru
But, still, Yuzuru's new costume may be able to call TKG costume or color, as he likes TKG