Block Fairy

The Block Fairy is a non-sentient floating two-dimensional being that has the distinct ability to annoy the hell out of you.

THE ABOVE STATEMENT IS A SHAM

WRONG THEY ARE ALL WRONG
The block fairy is an extremely powerful being who posesses great unknown strength. His Age is determined to be...unknown.

He has several moves and techniques: Display on a shirt. and more

It is also rumoured that he is a fairy princess, however, sources have not confirmed this.