None of these people are bad voiceovers per se, but my are they in a lot of games with shitty acting, just check out their IMDb and/ or BehindTheVoiceActors pages. Apparently, all of them are based in Tokyo.

Bianca Allen
Dominic Allen
Robert Belgrade
Donna Burke
Tom Clark
Kurt Common
Rob Croker
Greg Dale
Monty DiPietro
Wayne Doster
Ryan Drees
Dennis Falt
Kimberly Forsythe
Michael G
Jeff Gedert
Barry Gjerde
Dennis Gunn
Mark Hagan
Lenne Hardt
Patrick Harlan
Dean Harrington
Lynn Harris
Ron Hirsh
Ruth Hollyman
Monica Horgan
Greg Irwin
Eric Jacobsen
Robert Jefferson
Cara Jones
Eric Kelso
Chris Koprowski
Avi Landau
Colleen Lanki
Paul Lucas
Jeff Manning
Corey Marshall
Brian Matt-Uhl
Scott McCulloch
Jack Merluzzi
Carolyn Miller
Michael Naishtut
Claire O'Connor
Terry Osada
Guy Perryman
Michael Rhys
Walter Roberts
Samuel Rose
Ruth Ann Morizumi
David Schaufele
Ann Slater
Xanthe Smith
Bill Sullivan
Dario Toda
Michael Tsonos
Rumiko Varnes
Peter Von Gomm
Rachel Walzer
Chris Wells
Lisle Wilkerson
Julia Yermakov