Aztek/WMG

Aztek would have eventually battled the real Tezcatlipoca.
Tezcatlipoca has appeared in several pre-Crisis Wonder Woman comics. DC could have revamped him into a Darker and Edgier Evil God. Also Quetzalcoatl briefly appeared in War of the Gods, he must be the one the Q-Society was waiting for. So this could have led to a an awesome battle between the real gods with Vanity as the battlefield.

Aztek is the mainstream DC Universe version of El Dorado from Super Friends.
Because he more or less resembles him. And was the then-only member who was Latino.