"Ultima Lucha Cuatro" (Spanish forLast Fight Four) is the name of the final episodes of the fourth season ofprofessional wrestling TV seriesLucha Underground. The first part ofUltima Lucha Cuatro (episode 21) premiered on theEl Rey Network on October 31, 2018 and the second part (and Season 4 finale) was broadcast November 7 on the El Rey Network and later shown in Mexico with Spanish commentary on theUniMás network. The episodes are the climax of several ongoing storylines that played out throughout the fourth season ofLucha Underground. As part of the season finale, all three of the Lucha Underground championships were on the line.