Leo is the White Lighter, sort of a magical guardian angel, assigned to the three Charmed sisters. He enters their lives incognito as a handyman, soon gets to know them but keeps the cover for a while. He is particilarly caring by nature, a former army medic when still mortal. His love for Piper, forbidden between their magical classes, long seems impossible, but in the end triumphs over the Elders' objections, they even get a sui generis wedding-equivalent, and have the sons, Wyatt and Chris.Leo first is white lighter, after elder, later avatar and in the end he loses all his magical powers to become only mortal.Despite the obstacles and difficulties Piper and Leo encounter, in the end manage to be together against evil powers. This show us how big and firm their love is. They grow up older with many grandchildren.