Final answer:
The new warehouse worker who also formerly worked as Dwight's personal assistant is Ryan Howard.
Step-by-step explanation:
The new warehouse worker who also formerly worked as Dwight's personal assistant is Ryan Howard. In the TV show 'The Office', Ryan starts as a temp worker but eventually becomes a full-time employee, working in various roles including a warehouse worker and Dwight's personal assistant. His character progression is an interesting aspect of the show, showcasing the dynamics of different job positions within a company.