Eraser is a pink-colored eraser that is shaped as a trapezoid and thinks he's too cool to do anything unless it's spending time with his best friends, Pen and Blocky. Eraser loves rewards, which might be one of the only things that ever motivates him. He's also terrified of pentagons. Eraser appears to be aggressively competitive, as he'll often go out of his way to sabotage other teams as a way to escape being bored on his own team. Eraser also seems to be a very smug person. He is a male.