Tahj Mowry stars as 10-year-old genius T.J. Henderson, whose fast-track leap into high school throws his life and family into uproarious upheaval, in Walt Disney Television’s new half-hour comedy series, "Smart Guy."

The talented young actor knows a thing or two about comedy. When he was a toddler, his mother, Darlene, would take him along to the set with his older twin sisters, Tia and Tamera Mowry, who star in the hit comedy series "Sister, Sister." At the age of four, Tahj began working in commercials. He proved so adept before the cameras that he soon was in heavy demand.

Tahj made his TV acting debut guest-starring on "Who’s the Boss?" and later played a recurring role for four seasons as Teddy, a friend of the Olsen twins, on "Full House." He has also guest-starred on "Friends," "Out All Night," "Minor Adjustments," Touchstone Television’s hit comedy "Where I Live," and Disney’s "Toontown T.V. Special." In addition, he has voiced characters for the animated series "Disney’s Aladdin" and "The Lion King," among others.

A gifted dancer, Tahj performed live on the 55th and 57th Academy Awards® telecasts. He has danced in music videos for Michael Jackson, Prince, and Mariah Carey. On stage, he starred in the title role of "Black Oliver Twist" in Philadelphia.

Next to acting, Tahj likes going to school. His favorite subjects are spelling and science. "I like spelling because I’m good at it," he explains. In between work and study, he finds time for sports. He plays football and basketball, and wants to learn to play ice hockey and soccer. He collects trading cards and action figures, and he keeps a "treasure chest" to hold his favorite things.

Tahj, who celebrates his birthday on May 17, was born in Honolulu. The Mowry family lived in Texas before moving to Los Angeles. Tahj makes his home with his parents, his older twin sisters, one younger brother, and a beloved new Doberman pinscher puppy named Toby.