In 2014, Universo 2000 Jr. and his cousin El Hijo de Máscara Año 2000 began working for International Wrestling Revolution Group (IWRG) under the name"Los Primos Dinamitas", or "The Dynamite Cousins" inspired by the name "Los Hermanos Dinamita" ("The Dynamite Brothers") that his father and uncles used when working as a team.