Yo Gabba Gabba takes place in the same universe as Undertale

Ok hear me out, i have no reason to not believe that the cast of Yo Gabba Gabba arent just monsters in the underground, i thought of this while watching Season 2, Episode 13 Mystery. In that episode there is a mysterious flower character that gives Tootie a letter about going surfing with her cousin, who could this mysterious flower character be? FLOWEY OFCOURSE. What if Plex is Mettaton’s cousin too, and DJ Lance is the human that fell from the surface, if this is a possibility then could DJ Lance have taken the pacifist or genocide route in Undertale? Hmm interesting, anyways what do you guys think about this AWESOME theory!!!!!🤯🤯