DALLAS --

A competitor on American Gladiators will have a huge hometown cheering section on Monday night.

Toni Oppliger coaches basketball, volleyball, and teaches physical education classes at Levine Academy in Dallas.

She's also an ex-Marine, a national power-lifting champ, and a contestant from the first American Gladiators. Also, at 46, she is the oldest competitor on the show this season.

"In the audition, I did more pushups now than I did 13 years ago,” Oppliger said.

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Video: Dallas Teacher To Appear On American Gladiators

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"She's very strong. She works out a lot, but she's a very nice lady and I'm glad to have her as my coach," student Brent Weinberg said.

See how Oppliger does on American Gladiators at 7 p.m. Monday on NBC 5.