Tony Alcantar

Character: Luis Sosa (voice)

Michael Benyaer

Character: Sammy Sosa(voice)

Philip Maurice Hayes

Character: Mark McGwire / Politician (voice)

Saffron Henderson

Character: Raquel Sosa / Magalise Sosa (voice)

Paul Dobson

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

Michael Dobson

Character: St. Louis Cardinals' Announcer (voice)

Aaron Joseph

Character: Luis Sosa as a Child (voice)

David Kaye

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

Richard Newman

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

Scott McNeil

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

Zahf Paroo

Character: Additional Voices (voice)

Tonjha Richardson

Character: Marta (voice)

Alvin Sanders

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

Brad Swaile

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

Francisco Trujillo Avalos-Davidson

Character: Juan Bautista Montero (voice)

Cathy Weseluck

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

Dale Wilson

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

Sammy Sosa

Character: Self (archive footage)

Tarik Batal

Character: Additional Voices (voice)

Doron Bell

Character: Additional Voices (voice)

Brent Chapman

Character: Additional Voices (voice)

Neil Denis

Character: Additional Voices (voice)