納谷悟朗 = Goro Naya
https://ja.wikipedia.org/wiki/%E7%B4...82%9F%E6%9C%97
Daisuke Inoue
http://vgmdb.net/artist/7575
とまとあき = Aki Tomato
https://ja.wikipedia.org/wiki/%E3%81...81%82%E3%81%8D
火浦功 = Koh Hiura
https://ja.wikipedia.org/wiki/%E7%81...B5%A6%E5%8A%9F
Name romanization + English title
http://cc.bookwalker.jp/2982101/t_700x780.jpg
出渕裕 = Yutaka Izubuchi
https://ja.wikipedia.org/wiki/%E5%87...B8%95%E8%A3%95
米田裕 = Yutaka Yoneda
http://old.sfwj.jp/member/YONEDA-YUTAKA.html
ゆうきまさみ = Masami Yuuki
https://ja.wikipedia.org/wiki/%E3%82...81%95%E3%81%BF
井上遥 = Yo Inoue
https://ja.wikipedia.org/wiki/%E4%BA...B8%8A%E7%91%A4
http://www.drillspin.com/person/view/ARDSA0816841
富山敬 = Kei Tomiyama
https://ja.wikipedia.org/wiki/%E5%AF...B1%B1%E6%95%AC
http://www.drillspin.com/person/view/ARDSA0801737
三橋貴風 = Kifu Mitsuhashi
http://jukumitsuhashi.music.coocan.j.../cdimg0001.jpg
ハナ正之, 谷山本, 犬塚正之, 山本センリ, 正之エータロー are just Masayuki Yamamoto aliases for chorus. It's sort of a parody of Hajime Hana & The Crazy Cats [ハナ肇とクレージーキャッツ]
About Monrio Erricone Jr., I'm aware that there is already the entry for
Monrio Elikone Jr but, to me, this alias makes no sense; giving the western parody genre of this song, it's a direct pun to Ennio Morricone.
Jun Araki is credited under Synthesizer programing but there's really some synthesizer played on this album; so, I've kept him in the performer credits.