Besides his work on daytime in the 1990s, Mantooth starred in television movies such as "White Cobra Express" and portrayed Bing Tupper in both the movie "Before the Storm" and the series "Under Cover". He starred in a "CBS Schoolbreak Special" as Mr. Leland in "Please, God, I'm Only Seventeen". In 1999, he played Solonsky in the feature film "Enemy Action". Mantooth also made guest appearances on series such as "China Beach", "MacGyver", "Baywatch", "", "JAG", "Promised Land" and "Walker, Texas Ranger" during the 1990s.