In "Thanks for 900,000 subscribers!", Six appears to be somewhat irritable but also knowledgeable, as they knew that Seven's "ears" were squishy and that was how they were able to kick Seven. However, she is also quite friendly, when interacting with Nine. Though this does not extend in helping others in trouble from their fellow kind, as they viewed Pie being attacked by Pi in "Pie Vs Pi: The Pi Day Massacre" as not their (referring to them alongside Two and Eight) problem.