Three women who claim that Edgar Collazo, 25, sexually assaulted them are facing him in court in a trial that has brought out emotions more than once.
At times, testimony was halted because of tears shed on the witness stand.
The roommate of a woman attacked in 2012 testified, "I said please stop hurting her..."
She went on to say that although she could slip her bonds and run for safety, she didn't. "I could not leave my roommate there helpless."
One victim said Collazo held a knife to her throat and held her in a choke hold during the attack.
The accused was given the name of the "Hello Kitty" rapist because of a cartoon tattoo on his arm.
Prosecutors said Collazo is one of the worst kind of criminals, "lurking in the dark to attack innocent women."
He faces eight charges related to two felony cases.