Highlander fans were confused and thought the animated series had problems with the continuity, especially about Quentin's teacher, Ramirez and had thought Quentin's Ramirez was Juan Sanchez Villa-Lobos Ramirez, mentor to Connor MacLeod, whom died in 1542, when he was killed by The Kurgan ("Highlander"). In the animated series, Quentin's Ramirez is Don Vincente Marino Ramirez, immortal and brother of Juan Sanchez Villa-Lobos. Don Vincente Marino Ramirez is not Juan Sanchez Villas-Lobos Ramirez and Immortals cannot be brought back from the dead, once they are beheaded and their opponent undergoes The Quickening. But, in Highlander II: The Quickening (1991). Connor MacLeod, when undergoing The Quickening, calls Ramirez's name and the power of The Quickening brings Ramirez back, with his head intact.
In the series, the immortals are Jettators, whom have renounced "The Game" and instead focusing on guiding the remnants of mankind on the road to prosperity. A Jettator is One with an evil eye, who always brings ill luck. The opposite of the Mascotte, who with a "good eye" always brings good fortune.
A fourth MacLeod, Owen, was to be introduced in the never released video game, Highlander: The Game. Owen MacLeod is said to be 2000+ years old, which would make him, the oldest, immortal MacLeod clansman.