Putting the original pic back on center stage....
Now that we've determined that Karthik is a Super Gremlin that cannot be destroyed via the usual Gremlin-vanquishing methods (all you really have to do, though, is take his mirror away and he'll be finished 'cause his best friend just left him
) - which fictional characters do JVN, Ken, Adrienne, and Jay remind you of in that pic? Quite a contrasting sequence of facial expressions from left to right, there.....
JVN = Shaggy (who looks like he's taken one too many hits from the *Scooby Snack* box - Zoiks!)
Ken = Scooby Doo (Great Dane <-> Huskie - practically the same)
Adrienne = Velma (Jinkies!)
Jay = Scrappy Doo (Puppy Power!)
I'm sure someone can do better than that....