Name a character with the last letter.

[lynne2007]

Kyoya Hibari

[crystald]

Ibiki Morino

[The Orphan]

Okita Sougo, from Gintama!

[Ryuu_L]

Obiichi Soemon

[crystald]

Nagi Naoe (Knight Hunters)

[Aurora]

Eren Yeager

[Aoi Yuki]

Ryuk

[Aurora]

Kuroko Tetsuya

[crystald]

Abel Nightroad

[Snail-kun <3]

Dio Brando

[crystald]

Odin (Romeo X Juliet)

[Aurora]

Nagisa Hazuki

[crystald]

Ibiki Morino (Naruto)

[Aurora]

Obi-Wan Kenobi

[crystald]

Iason Mink (Ai no Kusabi)

[Aurora]

Kabuto Yakushi

[crystald]

Ichigo Kurosaki (Bleach)

[Aurora]

Ichinomiya Kantarou

[crystald]

Ukon (Naruto)

[Kujaku]

Narumiya Ryō (Dakaretai Otoko 1-i ni Odosarete Imasu.) 

next letter o, I guess. 

[crystald]

Obito Uchiha (Naruto)

[Kujaku]

Alphonse Elric (FMA) 

[crystald]

Cain (Bleach)

[Kujaku]

Nabeshin (Nerima Daikon Brothers)

[crystald]

Orihime Inoue (Bleach)