The incident occurred outside of a Starbucks on 9000 block of Warner Avenue.
Officials say Daniel Molina, 20, Christopher Godinez, 19, and a third male juvenile, all of Fontana, are accused of robbing a victim who had agreed to purchase a $400 Starbucks gift card for $200.
When the victim arrived at the agreed upon Starbucks, the victim was punched multiple times and threatened by the suspects. They then drove off with the cash and gift card.
Molina and Godinez were arrested for robbery and booked into Orange County Jail Wednesday. The juvenile was arrested for robbery and booked into Orange County Juvenile Hall.