Climber is definitely one of the sweetest and most naive characters I know. But besides this, he has a very well-written personality, which proves that he is not just a silly doll, but something more.
His desire to be useful fascinates me, but at the same time saddens me, because it shows his desire to receive love and fear of abandonment. Because of this, he somehow becomes dependent on other people, and it's damn sad. He just deserves more and without the need to be useful to everyone