Complex sentence: César made his debut in November 1986 and initially used the name El Invasor (Spanish for "the Invader") but within a year of his pro debut changed his name and started working as the Luchador Emmascadero (masked wrestler) Silver King.
Split into simpler sentences: César made his debut in November 1986 and initially used the name El Invasor (Spanish for "the Invader"). Within a year of his debut, he changed his name and started working as the Luchador Emmascadero (masked wrestler) Silver King.