He is here! Or, rather, IT, I guess. The pronouns are They/It, being that ulB is the result of an experiment where Blu used his own DNA, which was his own whisker in this case, and dropped it into a beaker of unidentified liquid, put it out in the sun for 2 days, brought it back in, and after a few months, ulB was created. After realizing what it could do, it tried killing Blu by choking him out, but failed miserably due to Blu scratching one of his hands and punching him in the face, afterwards making his escape.