Whenever I walk pass this building, the town hall, I study the details bit by bit. This time I found him plastered on the right "wing" of this structure. With this, I zoomed and read the text : Rákóczi.
So, time for me to learn more about the Hungarian history.
Thanks reader Sala for the correction :)
Sala commented that the figure is actually either Rákóczy György I or II , links provided below ...