It's easy, if your avatar is a person, you have to talk like they would.

Ex: If it's Sora, you have to be upbeat and positive.

(And if it isn't a real character, than you can make up your own personality!)

I'll go first:

 

Iceland: I am NOT going to call you onii-chan.

Six shots, able to kill anything that moves

*You sigh and just sit there, watching the scene before you unfold.

OH, IT'S OOOOOON

 

BOOM, YEAH I JUST SLAPPED MY BUTT

 

Well, that's what happens when you're a genius...

*You tell him that you're not impressed.

Gladio! Prompto! Ignis! We're out!

*You stare quietly, then continue to play with the stick in your hands.

I'll... I'll do anything... I'll do it for her... I may not know who she is, but I know for a fact that I want to do whatever it takes to make her happy and to keep her safe.

 

*Gets on his knees*

Just, please... don't hurt her...

¯\_(ツ)_/¯

I DEMAND PLOT OR ELSE I'LL DESTROY EVERYTHING. WE SHALL BECOME ONE!

 

Peace!

EGGS NOWWWWW!

( - . - ) zzZZ

Quite!

I wanted the green glasses, but the blue just suits my coating so much easier

Cat, i'm a kitty cat! And i dance dance dance, and i dance dance dance!

Persona!

This what my face looks like behind the mask.

I stole it, the arrogance in your heart. 

ABSOLUTE POWER FORRRCEE

Aresene!

Where exactly does light come from, again?

I hope Jeff the Killer doesn't see me like this.

In my own way.....

I look innocent now, but wait til you see how I look with this mask on me.

I'll show you how you pale in comparison to us as thieves!

Eh, I don't really care.