Tomas Díaz Mendoza (born April 9, 1965) is a Mexican professional wrestler, better known by his ring name Villano IV. Within the stable Los Villanos, he has wrestled for Universal Wrestling Association (UWA), Asistencia Asesoría y Administración (AAA), and World Championship Wrestling (WCW). While popular and successful in Mexico, he frequently performed as a jobber in WCW. The other sons of Ray Mendoza who have used the name "Villano" include Villano I, Villano II, Villano III (Arturo Díaz Mendoza), and Villano V (Raymundo Diaz Mendoza).
Tomas Mendoza began wrestling in 1982 after being taught by his father and his older brother Arturo. He was not given the Villano name on his debut, both his father and his older brothers wanted him to get a college degree and also earn some in ring experience before he would be allowed to use the Villano name. He spent the first couple of years in wrestling working as various enmascarado characters such as Leopardo Negro III and Super Maquina, Jr.
Your thoughts are betrayal always the same
Divine abandone always the same
Good and gentle like the shyness
And suddenly dazzled by the rays of a golden life
I feel it coming, feel it coming
And it's all going down
I'm your slave and your victim
I'm in the mire selling myself
Your games surround me in that gloomy future
Oh, what will you have made of me
I feel it coming, feel it coming and it's all going
I feel it coming, feel it coming and it's all going down
So will I be lost and all alone
Abondoned on a dessert plain
My past returns before my eyes
And I'm going down, 'cause it's going down
It's all going down
And I'm going down, 'cause all is going down
It's all going down, going down
I am loyal, and forever
Know my duty
Must leave this place
And take with me only my heart
Oh, just to save it