Len is a shy, quiet and self-conscious fourteen year old boy who is, by brand, the official leader of the Lens. He seems timid but overtime will open up to a person and prove that he is very sweet and kind. Len's best friend is Append who he cherishes dearly and relies upon to help him maintain order among the Len household. His least favorite module is Gigantic OTN who he despises for flirting with him. Len is not taken seriously by the majority of the other modules due to his nature to act as a doormat and allow people to push him around. On the contrary, Append, Asymmetry and Aitetsu all respect the blonde a great deal. Append has been known to both defend Len against bullies and tell off anyone talking rudely about him.