Why does Pachuco antagonize Henry?

In Valdeiz's play Zoot Suit, El Pachuco is a mythical, idealized figure who represents the spirit of the zoot-suited Chicano rebel of 1940s Los Angeles. In the play, he functions as a kind of Greek chorus, the name of a Chicano gang and an alter ego for Henry Reyna, the lead character.
When Henry (Hank) is wrongly accused of murder in the so-called "Zoot Suit Riots," he struggles with his Chicano identity and police brutality as they try to obtain a confession. In times of stress, Henry conjures up El Pachuco, who goads him with pride in his identity and honesty not to give in, despite the beatings, and to represent himself and his people with pride.
While the dialogues with El Pachuco encourage Hank, it seems he is convicted anyway, but Valdez offers multiple outcomes to the story, reminding us that Hank is a kind of Chicano everyman.