Héctor Juan López Vieyra (born November 25, 1984) is a Mexican luchador (or professional wrestler) who is best known for his time with International Wrestling Revolution Group (IWRG) under the ring name Canis Lupus. He has previously worked under the ring name Comando Negro from 2009 to 2012. Near the end of 2012, López took over the Canis Lupus character when the first wrestler to use the name was replaced by IWRG. "Canis Lupus" is Latin for wolf, something that was reflected in the mask, that he wore prior to September 2016, which is adorned with stylized wolf features such as ears.