Number 12 is retired at Bayern Munich because it is symbolic to the fans being the "12th man" on the pitch.
Number 28 for Bayern Munich is defender Holger Badstuber.
#31
# 33
No. 9
He wore No.4 on his jersey.
12
He wears the number 8 jersey.
He wears number 81
He wore the number 19.
He wore number 28.
22!
10
19