Oh sweet theme trades! 

I think Meta-Ridley's is obvious, however I'll probably opt for [this](https://www.youtube.com/watch?v=nGcYSW52I6A) version. 

As for Charlotte it will of course be the [cheese](https://www.youtube.com/watch?v=A8Smccnscys)! 

Overpowered characters? I've had the idea of an Elite of 3 or 4 guarding the already super powerful SE boss, whether she really needs them or not. They'll likely have to be overpowered but [not](http://th07.deviantart.net/fs71/PRE/i/2014/156/6/f/naruto_679__kaguya_ootsutsuki_by_s_i_m_c_a-d7l60na.png) [entirely](http://img3.wikia.nocookie.net/__cb20140407213831/villains/images/2/26/AizenFM.jpg) [broken](http://th06.deviantart.net/fs71/PRE/i/2012/277/6/2/_coloreo__bleach_____juha_bach_____by_ricardo9tomate-d5gpzv0.png) [to](http://media.animevice.com/uploads/3/36324/745609-v_super.png) [the](http://th05.deviantart.net/fs71/200H/f/2011/138/6/5/original_image_from_barragan_by_rafinhax-d3gndx6.jpg) [point](http://img2.wikia.nocookie.net/__cb20130812125955/naruto/fr/images/1/1d/Madara_Uchiwa_est_de_retour.png) [of](http://vignette4.wikia.nocookie.net/bleach/images/5/57/Pepe.png/revision/latest?cb=20140402214008&path-prefix=es) [no](http://vignette3.wikia.nocookie.net/bleach/images/a/a2/Pernida_Parnkgjas.png/revision/latest?cb=20141108231843&path-prefix=es) [fucking](http://www.tatliaskim.org/imagehosting/1624215396e5c446a8c.jpg) [return.](http://img3.wikia.nocookie.net/__cb20111123155936/naruto/fr/images/b/bd/Tobi-1535973078.png) [We](http://fc00.deviantart.net/fs71/i/2012/295/d/1/fullmetal_alchemist___father_by_iphenixia-d5cy8x0.png) [all](http://media.animevice.com/uploads/4/41354/774965-maxresdefault.jpg) [know](http://vignette3.wikia.nocookie.net/hunterxhunter/images/0/06/122_-_Meruem_wants_to_talk.png/revision/latest?cb=20140327043129) [what](http://fc01.deviantart.net/fs71/f/2014/002/8/4/homura_akemi_vector_by_hombre0_d4ccjbw_by_madoka_magicahomura1-d70j2ng.png) [I'm](http://img1.wikia.nocookie.net/__cb20131226145337/naruto/es/images/6/62/Nagato_HD.png) [talking](http://www.gamerqc.com/wp-content/uploads/2014/11/majoras-mask.jpg) [about.](http://static.comicvine.com/uploads/original/11114/111142536/4008885-alucard-flaming-wave666-28477431-1600-1000.png)(Only to name a few common ones). They would mostly be there for the sake of an epic final fight. 

I guess a good example would be [King Bradley](http://static.comicvine.com/uploads/original/11111/111119138/3466578-wrath.jpg), "Wrath". Insanely overpowered but not ridiculously Godly or unbeatable. Just throwing this idea out there, considering SE is outmatched in terms of quantity and many have their own agendas. It could be the leader's breath of fresh air by having loyal badasses around.