Alejandro Ruiz, often credited as Alejandro Antonio Ruiz, is a bilingual Mexican-American voice actor based in Los Angeles. They began their career in theater before transitioning to voice acting, seeking more creative freedom and opportunities for Latin-American actors. Ruiz's professional background includes extensive work in audiobooks, commercials, and public service announcements, notably serving as the Spanish voice of the 2020 US Census and the voice of the CDC's national HIV prevention campaign in both English and Spanish.

In the realm of anime voice acting, Ruiz is known for providing the English dub voice of Izana Kurokawa in the popular series Tokyo Revengers. A significant portion of Ruiz's career is dedicated to video game voice acting. They are widely recognized as the voice of the Agent Gekko in the online game Valorant, a role for which they also provided the Spanish voice and contributed improvised dialogue. Their other video game credits include voicing Neymar Jr. in Mobile Legends Bang Bang, Officer Jain in The Callisto Protocol, a cop in Need for Speed: Unbound, and Paracelsus in an unidentified video game. Ruiz has also contributed voice work to the Mexico stage in Street Fighter 6.

Ruiz has established a recurring collaboration with the game developer Riot Games, primarily through their role as Gekko in Valorant. They have also worked on projects for major networks and streaming platforms, with their voice featured on Cartoon Network, National Geographic, Disney+, Netflix, and HBO Max. Ruiz's notable achievements include being part of a small percentage of Latino actors in the industry and being celebrated for bringing authentic, personal experience to their characters, particularly as a Mexican-American voicing a young, bilingual character in a major video game. They are represented by the talent agency Atlas Talent.