Montgomery played Andre Maddox on the ABC daytime soap opera General Hospital from 2015 to 2019.

[2] Sometimes credited as "A.T. Montgomery", his first starring role was in the horror-comedy Leprechaun in the Hood (2000), for which he also contributed writing and vocals for several songs.

In 2015, Montgomery joined the cast of the ABC daytime soap General Hospital playing Dr. Andre Maddox.

[citation needed] In the summer of 2005, Montgomery returned to Indiana to star in theatrical fundraisers for charity.

[citation needed] Montgomery has produced one CD of his own music, What You Know About..., featuring four songs about Star Trek themes.

The single also featured rapper J. Naught-T.[5][6] In 2013, Montgomery created Miles Away, a hoped-to-be media franchise, about a teenager with special needs who battles aliens.