TF2: The Heavy's voice actor, Gary Schwartz, voices the Demoman as well

The statement is true as Gary Schwartz, the voice actor for the Heavy in Team Fortress 2, also provides the voice for the Demoman character in the game. Schwartz is well-known for his versatile voice acting skills, and aside from these two characters, he has also voiced other iconic video game characters such as the Medic and the Sniper in TF2. Additionally, he has extensive experience in voice acting for animated series, commercials, and theme park attractions, further solidifying his expertise in the field.