Rin Kagamine
a vocaloid, faternal twin sister of Len Kagamine
Rin
a minor (male) character from Final Fantasy X and X,2
Rin Tohsaka is a character in Fate/Stay Night
Rin Kuojo is a character in Ghost Hunt (albeit pronounced as Lin)
Christopher "Topher" Brink
character on TV's "Dollhouse"
Topher
character in "The Impossible Knife of Memory" by Laurie Halse Anderson