Beauty and the Beast
So this idea might have been done before (I am positive it has) but I doubt it has been done this way. Beauty and the Beast transformers style. Like I said it might have been done before, but I'm sure it was with Megatron and Optimus. I'm hoping someone might be willing to try with Megatron and Soundwave.
My bunny actually is that Soundwave, from TF: Prime, is the Beast. He's been damaged so he hide it with his visor and he refuses to talk because he thinks he is so horrible to look at that no one can stand to be near him so he does not invite them in by talking to them. Megatron needs somewhere to stay after a gladiator match goes horribly wrong or something and ends up on Soundwave's doorstep. Or something of the like as I am tossing out ideas now.
Bonuses: Frenzy and Rumble play the parts of Lumiere and Cogsworth (they don't have to be cursed, just play the part... ie. inviting Megatron in, making him feel welcome, arguing with one another, etc.)
Optimus as Gaston. Why? Because it would be amusing if Optimus is the bad guy, coveting Megatron's servo in spark-hood.