From the DC Universe...
Aztek is the champion of the Aztec god Quetzalcoatl. He was briefly a member of the Justice League.
A member of the Teen Titans, the Blue Beetle is the alter-ego of Jaime Reyes.
El Diablo is the alter-ego of Rafael Sandoval, a member of the city council of Dos Rios, Texas.
Fire is the alter-ego of Beatriz da Costa, a Brazilian mystic, and the president of the Brazilian branch of Wayne Enterprises.
Mas y Menos are twins from Guatemala who can move at super speeds, but only when they are in contact with each other. Their battle cry is, "Mas y menos, si podemos!" ("Plus and minus, yes we can!")
The Question is the alter-ego of former Gotham City police detective Renee Montoya. She resigned from the department because she was disgusted by the corruption, and now she operates out of a lighthouse in North Carolina. She is a lesbian.
Wildcat is the alter-ego of Mexican-American superhero Yolanda Montez.
From the Marvel Universe...
Formerly known as Arana, Spider-Girl is the alter ego of Anya Corazon.
Antonio Rodriguez was transformed into Armadillo after a freak experiment.
Darwin is the the alter-ego of half-African, half-Latino Armando Munoz. Darwin appeared in the recent movie X-Men: First Class. But he was killed off.
Echo, aka Maya Lopez, is an associate of Daredevil.
Rafael Carago was the lone survivor of a chemical attack on his hometown of Springdale, Pennsylvania. He became Helix.
After the death of Peter Parker, the mantle of Spider-Man was taken up by a half-black, half-Latino named Miles Morales.
Reptil, aka Humberto Lopez, is a member of the Avengers Academy.
Risque, aka Gloria Dolores Munoz, is half Seminole Indian and half Cuban.
Silverclaw, aka Maria de Guadelupe Santiago, is the daughter of a South American volcano goddess.
Skin, aka Angelo Espinosa, was a former East LA gang member who faked his own death to leave that life and become a super hero.
Sunspot, aka Roberto de Costa, is a Brazilian mutant who can harness solar power. He has been a member of both the X-Men and X-Force.
Tag (Brian Cruz) is a Puerto Rican mutant who is a member of the Hellions squad of Xavier's Institute.
Angel Salvatore (aka Tempest or Angel) was portrayed in the recent film X-Men: First Class. She has insect-like wings and can fly.
Thornn (Lucia Callasantos) is from the X-Force comics. She was one of the few Morlocks to sruvive the Mutant Massacre.
Victor Mancha is a cyborg whose father is the super villain robot Ultron. His mother is a human named Marianella Mancha. He is the only Latino member of the super group The Runaways.
Angela del Toro is the fourth person to adopt the alter-ego White Tiger. Her uncle, Hector Ayala, was the original White Tiger.
For a fairly complete list of Latino Superheroes, click HERE.