Grand Admiral Thrawn
Ysalamiri are furry salamander-like creatures that live on Myrkr. They have the unique property of repelling the Force, rendering all Force powers within their sphere of influence void; for this reason, they are prominently used by Grand Admiral Thrawn in his campaigns against the New Republic. The supposed reason for the Force bubble is that it acts as a way to hide from the other unique carnivores of Myrkr that use the Force to hunt down prey, such as the vornskr. The term "bubble" is particularly apt because, like water bubbles underwater, multiple ysalamiri's bubbles reinforce each other instead of overlapping. Because of this, large sections of Myrkr are completely removed from the Force.