F

F (name unknown) is one of the letters of Wammy's House.

In Bangnum, Thailand, F discovered the Americans, who were investigating a Thai Village where a deadly disease was found. F ran into the jungle and found the Thai boy (Near) in the abandoned temple writing numbers on the temple wall. F shouted "BOY" (meaning "Near") to get out of the village, when they saw a U.S. bomber leaving the Village without the Thai people. The Thai people were killed by the U.S. Bomber, because the people in the Thai Village were infected.

After the Thai Village was destroyed, a U.S. Soldier found a truck moving north in the jungle of Thailand, so the U.S. Commander ordered a U.S. Soldier to destroy the truck without any witnesses or survivors. But F was driving the truck, who had managed to escape from the Thai Village with Near. They were being followed by the U.S. helicopter with combat guns, and before F dropped Near off, he told him to find a phone and call "010-5928-1472-18". F told him to say "F1225" to contact Watari to protect him.

He gave a blue necklace (with a chip inside) to the Thai boy and said, "Good Luck! BOY!" F was caught by the U.S. helicopter, and he stopped the truck and surrendered. The U.S. helicopter shot at the truck and it was destroyed along with F.

He is not present in the anime or the manga, he is only in the film L: Change the WorLd.