This is how Meltdown infects Twilight goes in The Enemy Within The Sparkle.
Meltdown: I'd just drop in for a visit.
Thunder Streak: Meltdown? Isn't he the villain with...?
Meltdown: The great radiation? Yes, but I've added a little something extra to my arsenal. Think of it as a special bonus.
[Meltdown swings his sludge whip at Trixie. Twilight gallops over and pushes Trixie out of the way and they both hit the floor]
Meltdown: Works fast; who has time to wait?
[Meltdown fires green sludge at Twilight and