Teo's career has its foundation in devised theater, creating solo works as well as ensemble works with his company, D-Projects. He is currently artistic director of the Combat Hippies.

Conscience Under Fire is a theater piece developed through a series of spoken word workshops with deployed veterans of the Iraq war. 

Third Trinity is a solo play written and performed by Teo Castellanos with direction and dramaturgy by Mac Arthur Genius and Oscar Winner, Tarell Alvin McCraney. 

Fat Boy is a non-linear story based on American consumerism and waste juxtaposed with world hunger and poverty. 

Scratch & Burn  is an investigation of human nature and our incessant need to battle for supremacy and dominance and a response to the invasion of Iraq. 

NE 2nd Avenue is an evening-length one-man play is a compilation of some characters that make Miami their home.