Ríos lapsed into obscurity by late 2000 but did have a brief feud with Kurt Angle that culminated in a main event match on Sunday Night Heat.

He also had a small involvement in the Invasion angle, most notably unsuccessfully challenging Chris Kanyon for the WCW United States Championship on an episode of WWF Metal, which would be his last televised match with the company on August 27 (aired September 1).

Águila made a comeback to the United States in 2004 as part of Team AAA/Mexico in Total Nonstop Action Wrestling with Abismo Negro, Juventud Guerrera, Héctor Garza and Heavy Metal.

He was part of "Block B" that competed on the August 6, 2010 Super Viernes show where he was eliminated from the tournament when he lost to La Máscara in the first round.

[14] On November 2, 2010, Águila and Garza lost the CMLL World Tag Team Championship to Dragón Rojo, Jr. and Último Guerrero.

[15] On December 3, 2010, at Sin Piedad 2010 Águila had his trademark hair shaved off after being defeated by Rey Bucanero in a Lucha de Apuesta.

[20] In the fall of 2012 Los Invasores began a feud against the CMLL World Trios Champions El Bufete del Amor ("The Law of Love"; Marco Corleone, Máximo and Rush).

[24] On July 19 at Infierno en el Ring, Águila lost his hair to Shocker in a ten-man steel cage Lucha de Apuestas.