Astrix, the Princess of Underverse (Undertale Multiverse) was in the sciencetale universe. She was trying to defeat a virus in the universe. But she had to be careful not to use too much of jer energy, it could make her tired and she had to take care of herself and not be careless. As she finishes curing the Sciencetale universe, she then teleported by going into a wormhole and she was now in your universe.

"Ah, well. This universe is one I never seen before." Astrix then adjusted her crown "Let's see if this universe has a virus."