Name: Daan Sapp
Other Names: Mijnheer Sapp
First Appearance: Batman and the Outsiders (vol. 2) #9 (Sep. 2008): "The Uninvited"
Number of Appearances: 1
Employer: European Space Agency (ESA)
Nation: The Netherlands
Note: died while being interrogated by Batman and Looker
Batman calls this Dutch character "Mijnheer Sapp" because "Mijnheer" is the Dutch word for "Mister."