The people you see at 7:45 aren't Wave, Shopper and Your'Soup. They are "Legit human doctor", "Nurse Orange" and "A pair of pants."
Songs used:
Monkey suit - Elton John: https://www.youtube.com/watch?v=2rV0dJOqdwU&list=PLoJ6bxt15J42iE07jIdFop20ZVrdwT-UV&index=1
ぴぽぴぽ - Serani Poji: https://www.youtube.com/watch?v=iRvkMzy4Gcg