Muggles' Guide to Harry Potter/Characters/Ambrosius Flume

Overview
Ambrosius Flume is mentioned only in passing and has no direct role in the books.

Prisoner of Azkaban
As Harry makes his way through the basement of Honeyduke's Sweetshop after his first passage through the tunnel revealed by the Marauder's Map, he must avoid a man going into the basement to re-stock shelves. This man is never identified, but may be Ambrosius.

Half-Blood Prince
A graduate of Hogwarts, Ambrosius Flume was one of Horace Slughorn's favourite students. Slughorn introduced him to Ciceron Harkiss who gave him his first job. Ambrosius is now affiliated with Honeyduke's Sweetshop, and still sends Slughorn a hamper of sweets every birthday.

Relationships with Other Characters
Ambrosius would have had good relationships with many Hogwarts students and locals. He would also have a good relationships with shop assistants.