In The Comics
Ginger Lopez is a blonde-streaked fashion designer and a classmate of Archie's gang. She was originally meant to replace Cheryl Blossom as Riverdale's resident snobby rich girl, but that idea was ultimately scrapped and she was given more of her own identity.
In The Show
Ginger, now without the blonde streak in her hair and with a less flamboyant dress style (as well as any references to her working in fashion being nonexistent thus far), is one of Cheryl's main two cronies within the River Vixens (Riverdale High's cheerleading squad.)