Superpenguin
Penguins! <3
I don't even know how Sleeper Inventor is related to Mean Girls, hence my vote for SP (among the other reasons I've listed previously). Toxic goo can also be a mafia role as well as town if he is, in fact, toxic goo.
You better hope others agree with you. Because in this verison of TOxic Goo, if I don't reach majority, but I still have people vote for me, all those who vote for me die of poison.