I'm not sure if anyone noticed but
I think the knarrens have a small resembalence to the stone people, and were possibly inspired from them, which would explain a lot since rayman 3 takes some elements from the 1st game.
1. The minions are invincible (even though the stone people CAN die in the GBA port :/ )
2.They both have some dude that wants to kill you, and they're like, the BOSS of their race.
3. Mr.Stone and Reflux are embarresed when you kill em, when mr.stone is dancing out of control, his species probably laughed at him and refulx's first taste of defeat :3
Now the two speicies do have their differences, and very different, like the first time you saw the knarrens I bet some peeps shat their jammies, and with stone people, its more like "DON'T YOU EVER BLOODY DIE!?!?"