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.

"you never stood a chance against us, Ventus!"

"Mom always said, be yourself!"

would anyone like a cupcake or to die

"Where is that rusty old pistol that you carry on your person!??!!"

what was that poppet

NYAN NYAN NYAN NYAN NYAN~

alfie please be a dear and get me the icing from the top cabinet

"Wow, mom! Things are really looking up for me at the Sohma's!"

"I thought I didn't qualify. I was considered, what was it... volatile, self-centred, and I don't play well with others."

"Dalian happens to be my name!"

artie is my name

"Hear me, Kingdom Hearts! It seems we must begin anew. Ah, but know this: I will give to you as many hearts as it takes. Mark my words! You can no more be complete without me than I without you. Heed me, Kingdom Hearts! Lend me your power, so that we may be complete! The power to erase the fools that hinder us." I guess this one will be the last one from Xemnas...

"You said you would step on the crisp leaves in autum!" (the sad end of the anime)

*Cure*

"It's nice in here with the loudmouths gone."

did you mean me? well guess what!? the x-blade will be forged!

The X-blade shall be forged! Problem, Ventus?

who is ventus does he want a cupcake

France: ohonhonhonhonhonhon

England: w. . . Wanker. . .

who is ventus does he want a cupcake

 

No, but vanitas wants one OwO

"As if!"

No, but vanitas wants one OwO

 

France: ohonhonhonhonhonhon

England: w. . . Wanker. . .

 

hello arther and france you guys want soem cupcakes oh and of coarse vanitas can have one *gives cupcake

(Japanse gibberish)

 

Soon...

"I love things that are sweet if course!"

then have a cupcake