"Hans is the 'old man' of the group. He tends to be nervous and is often indecisive," according to Adafruit. "Hans frequently changes his mind, and is a little fidgety (he oscillates) when he's not moving around. He is very meticulous and precise in other ways; Hans does not like to compromise, preferring to be in a steady state until a dramatic change is called for. Hans speaks with the voice of a kindly old man with a Swiss-German accent, though his voice can become more nasally when he's upset or feels strongly about something. His catchphrase is 'maybe so, but perhaps not.'"