You can see that Matt is not the exact same character as El Patrón, which is showing that the theme is people become good or evil not by birth but by their surrounding influences.
I believe it has to do with view of human nature because the novel shows that people aren't born evil (though some people in the novel thought you have to be baptized to be “good”).
Matt is different from El Patrón; you can see some similarities between the two characters at points but there was one difference that really stuck out to me and it was this:
“‘Saint Francis says it is good to give things away to the poor,’ Matt suggested.
The change that came over El Patrón then was extraordinary. He drew himself up in the bed. His eyes flashed, and energy bubbled up from some unknown reservoir. ‘Give . . . things . . . away?’ he cried in the voice of a man one hundred years younger. ‘Give things away? I can’t believe that I heard that! What have they been teaching you!’
‘It was only a suggestion,’”
(Farmer 183, 184)
El Patrón is consistently called a vampire. Like in page 99 where someone says “The old vampire. So he managed to crawl out of the coffin again.” and page 269 which says, “There were stories of...a vampire king who lived in the castle.” This is because El Patrón is evil.
One characters, Esperanza, despises El Patrón and all he stands for. Her book The History of Opium conveys her feelings towards this character very well.
“A more evil, vicious, and self-serving man could hardly be imagined, wrote Esperanza on the next line.
Matt threw the book away as hard as he could. … How dare she insult El Patrón!” (Farmer 170)
This shows a line in Esperanza’s book and Matt’s feelings towards it. This does not have evidence to why the original Matteo Alacrán is considered evil but shows how Matt, The clone, sees El Patrón’s actions and still defends him by believing the best. By meeting the “new” Rosa, he had to have assumed this was El Patrón’s doings and yet Matt still defends the old man. This proves Matt is good.
The novel depicts El Patrón as an evil person through the obedience shown by surronding people and Esperanza’s book. Her book states that El Patrón is drug dealer but also created eejits and committed other foul acts.
There is more evidence that Matt is good through reading the following:
“When I’m in charge-Matt quickly adjusted his thought-When I’m helping the people in charge, I’ll free the eejits.”
El Patrón created the eejits and Matt wants to free them, this is a very big difference and important when comparing the two.