Shylock

Shylock is the main antagonist in the William Shakespeare play The Merchant of Venice.

At one point in the play he gives a speech about how similar two groups of people are despite one being treated differently.

Hank McCoy was a fan of the play and knew the speech by heart. When he went to court to decide if he could go out on bail, he quoted the speech to the judge noting the similarities between mutants and humans.

Background
Shylock's speech was referenced but the character was not actually seen or named.