Sweden references in TMNT

[Original TMNT Cartoon Fan]

I would like to know references to Sweden (or Swedes) within different TMNT universes. All I know is that the professor in "Northern Lights Out", set in Norway, is called Svensson or Swenson as last name (Swedish last name), maybe because of Murakami-Wolf-Swenson.

There must be some more (like Nobel Prize)