[quote=@Space Communist]
I'm gonna be honest with you: I prefer that the leaders look that way.

For one thing, there's not enough artwork for all the leaders. For another thing, I'm not even sure there's any way to replace the leader's talking audio. And for a third thing, as I said, I like to think that they're all just various representatives of their nations, and they're [i][b]REALLY[/b][/i] into cosplaying. I swear, Sotelo should hire a different diplomat...not to mention Arnold....

Regardless, in time, I'll replace the textbox stuff to where it's a more obvious indication that they're just cosplaying representatives. Methinks it'll be funnier that way.
[/quote]

I'm coming at this with minimal experience since I basically haven't played any Civ game since Civ 2 where the advisers were live-action. Also the direction I may be going will probably trigger Vilage so I'll just chunk it in a hider.

[hider]
There's a mod for Civ five that adds MLP nations from, of course, the MLP community. Now I don't know the extent at which the mods goes into detail, so I don't know if the guy who put it together got any number of the hundred of amateur Voice Actors to do any lines. But I suspect that as Vilage suggested, then the best bet would be to use static images as I think they no doubt used. Case:

[img]https://derpicdn.net/img/view/2015/4/4/864875__safe_solo_rainbow+dash_cloud_mod_civilization_civilization+v.jpg[/img]

[img]https://derpicdn.net/img/view/2015/4/4/864871__safe_solo_fluttershy_mod_garden_civilization_civilization+v.jpg[/img]

[img]https://derpicdn.net/img/view/2013/4/10/294087__safe_war_mod_saddle+arabian_amira_civilization_haakim_civilization+v_saddle+arabia.jpg[/img]

There is of course the massive art world or screenshot archives for this guy to utilize. But it works for him.

EDIT - I dived into the world of nasally Let's Plays for your sins and can confirm that the portraits in the MLP case are only stills.
[/hider]

And I may be lazy and slow to arting, but some inspiration and purpose never hurt.