This is a "Despicable Me"'s Minions and TMNT mashup. These "henchmen in a half shell" don't tend to have a pronounced sense of individuality, so I think they actually prefer to wear the same colour headbands! In their original incarnation of TMNT , they wore all red headbands anyway. Leonardo (blue) is usually the lead turtle - maybe they all want to be the leader! Hope you like it!