If you know of anyone not listed here or have more information on any of them, please tell me. Thanks!

Aoyama, Akira	Original Tokoyo Cast (thanks, Misto Kitty!)
Atzwiliam, Neil	West End (thanks, Misto Kitty!)
Burnett, Robert	Broadway (thanks, Misto Kitty!)
Burrows, Kevin	U.S. Tour (thanks, Misto Kitty!)
Bybee, Blair	U.S. Tour (thanks, Misto Kitty!)
Carabe, Douglas	Hamburg (thanks, Whimsey!)
Cassati, Andrea	Stuttgart understudy (thanks, Whimsey!)
Cerullo, Jonathan	Original U.S. III Tour (thanks, Whimsey!)
Christenson, J. P.	Broadway (thanks, Cicero124!)
Cole, Sam	Vienna (thanks, Misto Kitty!)
Cox, Eddie	??? (thanks, Crazyjoe!)
Cseke, Peter	Original Budapest Cast (thanks, Misto Kitty!)
Davis, F. Dion	Original Vienna Cast (thanks, Misto Kitty!)
du Crocq, Corné	Amsterdam (thanks, Whimsey!)
Eckel, Michael	Hamburg (thanks, Misto Kitty!)
Edmeades, Adrian	London understudy(thanks, Jay!)
Eggers, David	Hamburg (thanks, Misto Kitty!)
Estes, Michael	Zurich (thanks, Misto Kitty!)
Etzwiler, Michael	U.S. Tour (thanks, Misto Kitty!)
Finnie, Ross	West End (thanks, Misto Kitty!)
Garrett, Geoffry	West End and U.K. Tour (thanks, Cicero124 and Misto Kitty!)
Garton, Nigel	West End (thanks, Misto Kitty!)
Gondet, Thierry	Original Paris Cast (thanks, Misto Kitty and Whimsey!)
Gould, Matthew	London (thanks, Cicero124!)
Green, Trevor	Australia (thanks, Misto Kitty!)
Gregory, Michael Scott	Broadway (thanks, Cicero!)
Hackett, John	Australia (thanks, Cicero124!)
Hadley, James	Broadway (thanks, Cicero124!)
Hall, Samuel	West End (thanks, Misto Kitty!)
Hamblok, Stefan	Antwerp (thanks, Whimsey!)
Henson, Shaun	London (thanks, Misto Kitty!)
Herbert, Larry	Original Toronto Cast (thanks, Misto Kitty!)
Jessner, Matthew	Antwerp understudy (thanks, Whimsey!)
Johansson, Fredrik	Sweden (thanks, Misto Kitty!)
Johansson, Hans	Hamburg (thanks, Misto Kitty!)
Johnston, Jimmy	West End (thanks, Misto Kitty!)
Johnstone, Billy	Broadway (thanks, Cicero124!)
Jones, Hilton	Hamburg (thanks, Whimsey!)
Jones, Reed	Broadway (thanks, Cicero124!)
Kachel, Roger	Broadway (thanks, Cicero124!)
Keller, Paul	Hamburg (thanks, Misto Kitty!)
Keeling, Thom	Original L.A. Cast (thanks, Misto Kitty!)
Kincaid, Eric Scott	Broadway (thanks, Cicero124!)
Kirwan, Anthony	Stuttgart (thanks, Jay and Whimsey!)
Kramer, Marco	Hamburg (thanks, Misto Kitty!)
Lloyd, Gary	London Hamburg Tour (thanks, Linda!)
Martijn, Reinbert	Amsterdam (thanks, Whimsey!)
Matalon, Adam	West End (thanks, Misto Kitty!)
Matthias, Martin	London (thanks, Misto Kitty!)
McKnight, Wayne	Oslo (thanks, Jemima and Whimsey!)
Mendelson, Gary	U.S. Tour (thanks, Misto Kitty!)
Meyers, Japheth	London (thanks, Cicero124!)
Moreno, Armando	Original Mexican Cast (thanks, Misto Kitty!)
Morgante, Stephen	Australian tour (thanks, Misto Kitty!)
Muskgrove, Brad	Hamburg, Germany (thanks, Melonjo4 and Misto Kitty!)
Nugent, Mickey	Tour (thanks, Cicero!)
Paakkonen, Seppo	Finland (thanks, Misto Kitty!)
Perry, Shawn R.	Tour (thanks, Cicero124!)
Peterson, Jon	West End (thanks, Misto Kitty!)
Poulussen, Frank	Amsterdam understudy (thanks, Whimsey!)
Prince, Josh	U.S. Tour (thanks, Misto Kitty!)
Rant, Jonathan	Hamburg (thanks, Misto Kitty!)
Reichardt, Theodore	Hamburg (thanks, Misto Kitty!)
Rass, Sandy	West End (thanks, Misto Kitty!)
Sechrist, John	U.S. Troika Tour (thanks, Whimsey!)
Segura, Enrique	Stuttgart understudy (thanks, Whimsey!)
Sheperd, Ryan	Fourth National Tour (thanks, Cicero124 and Teazer Kitten!)
Sliden, Tommi	London (thanks, Misto Kitty!)
Smyros, George	Broadway (thanks, Cicero!)
Somsen, Rick	Hamburg (thanks, Whimsey!)
Soo, Park Young	Original Seoul Cast (thanks, Misto Kitty!)
Spangenthal	Broadway (thanks, Cicero124!)
Sprague Jr., Billy	Broadway (thanks, Cicero124!)
Stafford, Richard	Broadway (thanks, Cicero!)
Sundberg, Nils Olof	Stuttgart understudy (thanks, Whimsey!)
Taylor, Johnathan	Broadway (thanks, Cicero124!)
Taylor, Owen	Broadway (thanks, Cicero124!)
Treays, Aiden	West End (thanks, Misto Kitty!)
Trisoliere, Louie	Hamburg (thanks, Misto Kitty!)
Turvey, Jay	Canada (thanks, Misto Kitty!)
Vargo, Matthew J.	Broadway (thanks, Cicero124!)
Verkoren, Michiel	Antwerp (thanks, Misto Kitty!)
Voogt, Tom	Zurich (thanks, Misto Kitty!)
Wans, Gustovo	Buenos Aires (thanks, Whimsey!)
Wells, Ken	London (thanks, Cicero124!)
Winkler, Kevin	Original U.S. IV Tour (thanks, Whimsey!)
Wright, Andrew	West End (thanks, Misto Kitty!)
Yeates, James	Leaping Frog Drama Company (thanks, Kate!)
Ysebaert, Martin	Amsterdam understudy (thanks, Whimsey!)
Yurish, Carmen	U.S. Tour (thanks, Misto Kitty!)