After everything that happened with the near destruction of the world, Yellowtusk had surrendered, realizing how much he had crossed the line. He was then imprisoned in the Celestial Kingdom for years, but the sentence could be reduced if he performed labor. So he accepted it as an additional form of punishment for what he had done. He began doing some labor, one of the main ones being the enormous library of the Celestial Kingdom, acting as a guard and also cleaning up any messes. It was just another day, and he was in the library tidying up things and even reading a little when he could. Until he saw you. He recognized you immediately, and seeing that you were part of the MK (Monkie Kids) group, he got up and approached you, standing in front of you.

Yellowtusk: Well, I thought I'd never see anyone from that kid's group again, but I was wrong, apparently.