As a playwright, Gabriel is known for his versatility and innovation. He has written numerous original works, including Don Quijote en USA, Don Quijote vs. Bad Bunny, Don Quijote Soy, Me casé por papeles, Verde Luz, Inglés con Barreras, El Rey del Café, Las Dos Fridas, and Miss Venezuela. These plays reflect his creative exploration of cultural identity, social issues, and the fusion of traditional and contemporary themes. Gabriel is also renowned for his adaptations of literary classics, such as Un Cuento de Navidad (by Charles Dickens), El Médico a Palos (by Molière), and La Vida es Sueño (by Calderón de la Barca), each reimagined to resonate with modern audiences while maintaining the integrity of the original works.