The maker of the substance is Greed, based on his gold hands.
The girl who started the drops, Pride.
The older wrestler in red, Wrath.
The wrestler in blue, Lust.
The dancer, Sloth.
The guy serving the drop on a tray, Envy.
The girl at the end being Gluttony.
This song makes me cry every time. It's about a Mother who gave birth to a Son and watches her Little Pooh Bear's coming of age. She warned him about the world and the Seven Deadly Sins, as she has been there and done it all before, but her Son took a chance only to have his heart broken. So she asks him, "Wanna sip this smooth air, and kick it in the sand?" (come hither my Little Pooh Bear, where you are safe, with me.) Then goes on to say, "I'd say I told you so but you're just gonna cry, you just wanna know those penut butter vibes." Penut butter vibes = Luv, Passion, Ecstacy. He just wanted to know Luv but it didn't work, he just got his heart broken, just like his Mother who can't stand this world for that very reason.