i am not sure but i think it is called the Weinmarktplatz fountain and St.. Maurice stands proudly on the top with 6 medieval warriors around the base.
"Weinmarkt Fountain dates back to the late 1400s and is perhaps Lucerne's most beautiful. The current fountain is a mock of the original, which currently lies in the History Museum. Designed by renowned architect Konrad Lux, features of the fountain include the figure of St Mauritius and six medieval warriors scattered around the base."
The name is Wienmarktbrunnen. The fountain was made by Konrad Lux in 1481 and the construction costs were six times the original calculated price of 110 Gulden. As such a special city tax was introduced.
St. Mauritius on the top and 6 medieval warriors...one of the highest and most important fountains in Lucerne! :-)