Tony Alcantar

as Luis Sosa (voice)

Michael Benyaer

as Sammy Sosa(voice)

Philip Maurice Hayes

as Mark McGwire / Politician (voice)

Saffron Henderson

as Raquel Sosa / Magalise Sosa (voice)

Paul Dobson

as Omar Minaya / Domingo / Chicago Cubs' Assistant / Bill Clinton(voice)

Michael Dobson

as St. Louis Cardinals' Announcer (voice)

Aaron Joseph

as Luis Sosa as a Child (voice)

David Kaye

as Male Reporter / Chicago Cubs' Play-by-Play Announcer / Second Reporter (voice)

Richard Newman

as Chicago White Sox's Manager / Award Host (voice)

Scott McNeil

as Play-by-play Announcer / Texas Rangers' Catcher (voice)

Zahf Paroo

as Additional Voices (voice)

Tonjha Richardson

as Marta (voice)

Alvin Sanders

as Coach Billy Williams / Minor League Umpire / Chicago White Sox's Play-by-play Announcer (voice)

Brad Swaile

as Sammy Sosa as a teenager / Child Fan #2 (voice)

Francisco Trujillo Avalos-Davidson

as Juan Bautista Montero (voice)

Cathy Weseluck

as The Sosa Family's Sister / Female Reporter / Third Reporter / Keysha Sosa (voice)

Dale Wilson

as Jim Riggleman / Jeff Pentland / Sports Anchor / First Reporter (voice)

Sammy Sosa

as Self (archive footage)

Tarik Batal

as Additional Voices (voice)

Doron Bell

as Additional Voices (voice)

Brent Chapman

as Additional Voices (voice)

Neil Denis

as Additional Voices (voice)