[1] The team was founded in 2015 with the name of Eagles, and is one of the four charter members of the Liga de Fútbol Americano Profesional, the top American football league in Mexico.

Although the league recognized that there was an administrative problem with the medical expenses insurance policy, the team was punished for its forfeit, and had to pay a fine of $657,820.00 MXN (approximately US$32,000), and would have to change their franchisee for the 2019 season.

Unlike the 2017 team that stumbled in the playoffs, the Mexicas were able to win the Central Division Championship Game by defeating the Mayas 27–17.

On 22 April 2018 at Estadio Azul, the Mexicas made the most of their first appearance in the Tazón México, shutting out the Raptors 17–0 for their first LFA title.

[7] In September 2018, the new team franchisees announced they would to move the site of their home stadium to Campo del Casco de Santo Tomás starting with the 2019 season.