Cassidy Bullock was the main antagonist of Riverdale's 14th episode on second season "The Hills Have Eyes". He was a store clerk in normal life, but in real Cassidy is a thief who hates the upper classes and is interested in valuables.
Cassidy first flirted with Veronica in his store when she came to buy somethings with Betty Cooper, her best friend.
Cassidy learned her name and house. Same night, Cassidy and three more man with black hood break into Lodge Lodge and after three of them stole some valuables,Cassidy decided to make sure his victims knew how powerful he was by beating them with bat. But Veronica had managed to trigger an alarm which alerted her allies of her being in danger.
Once the thieves learned that, they ran away and Archie Andrews followed them. Eventually, Archie was able to catch up to Cassidy, and tackled the robber to the ground. Immediately after Archie ripped the hood off Cassidy, Veronica's father's capo, Andre,stepped out of the shadows, telling Archie to leave. After being ensured by Andre that Cassidy would be dealt with, Archie ran back to his friends, but not before hearing a single gun shot ring out, Andre had shot Cassidy.
At season's end, Archie was arrested by Sherrif Minetta for Cassidy Bullock's murder.
Cassidy Bullock was a young man who had light brown and blue eyes. He did not wear an employee's uniform when working. Archie was able to catch up to Cassidy during a chase, meaning that Cassidy may not have been able to run very fast.
Upon meeting Cassidy, Veronica seemed to think he was a pleasant person, as the two began to flirt soon after their first encounter with each other. However, sometime later, Veronica was able to suspect that Cassidy was not who he seemed to be, and instead, was a thief interested only in valuables. He is also intensely resentful towards those of upper class.