Who is Rommel from Princess in Pink and what is their importance?

Rommel is Grandmere's toy poodle. He escapes from her purse during Mia's birthday dinner at Les Hautes Manger and trips Jangbu, causing him to spill lobster bisque on Grandmere and lose his job. This event leads to the busboy protest, which escalates into a full-blown strike throughout the hospitality industry in New York City.