Hi, I want to know how to replace the player’s character mesh with another one while playing the game. like that alien transformations from Ben10 Cosmic destruction game., how do I call a model to the scene which was not in the scene before?
You can instaniate the new modeland destroy the old model. Thats what some do depending on the game. Also ther is a mesh class for all kinds of needs. Then there is the method i just used in a game where all the characers and character items are there the whole time but not active. I make a gameObjects array and use a interger to compare the condition for swapping what is active and what is not active.
Instead of cycling throug the array i cycle through different arrays then load each array with the character parts.
var char0A : GameObject[];
var char1A : GameObject[];
var char2A : GameObject[];
var swapNum : int;
function Update() {
if(Input.GetKeyDown("m")) {
swapNum ++;
}
if((swapNum >= -0)(swapNum <= 0)) {
for( var c in char0A) { c.gameObject.active = true; }
for( var c in char1A) { c.gameObject.active = false; }
for( var c in char2A) { c.gameObject.active = false; }
}
else if((swapNum >= 0)(swapNum <= 1)) {
for( var c in char0A) { c.gameObject.active = false; }
for( var c in char1A) { c.gameObject.active = true; }
for( var c in char2A) { c.gameObject.active = false; }
}
else if((swapNum >= 1)(swapNum <= 2)) {
for( var c in char0A) { c.gameObject.active = false; }
for( var c in char1A) { c.gameObject.active = false; }
for( var c in char2A) { c.gameObject.active = true; }
}
if((swapNum >= 3)(swapNum <=5)) {
swapNum = 0;
}
}
I know this is real shady code but it works pretty good. Once you get the structure down you can add on to it with no problem. The game i used this on gave you many options to pick components for a star vehicle almost 50 sets. and what i did was use player prefs to jus save the swap num and then i could reload the same character/ship as before.
got it!.. 
thanks!