Watch as Riverdale actor Rob Raco spills on some of his most embaraassing stories, reenacted with emojis. You might know Rob Raco as Joaquin DeSantos on Riverdale, the hot Southside Serpent who's been doing time in prison with Archie. Rob stopped by to spill his most embarrassing moments on the set of Riverdale—plus some crazy season 3 secrets. What he said about the next Riverdale episode has me SHOOK.