What programming pattern to use in this situation?

Question

Programming

I have already made a prototype game in es6 and I have a problem.
In short, there is only one unit class in the game and many instances of this class. And everything suited me until I decided to add my own skins for each unit.
Each skin is not just a sprite, but a certain combination of sprites and other things.
Initially, the structure looked like this
Game Loop:
unit1 = new Unit();
Unit Class

class Unit() {
var blabla = blabla
head = new Skin('HEAD');
arrayOfBody = new array;
for (i = 0; i > 10; i++){
child = new Skin('BODY');
array.push(child);
}
}

That is, in the Unit class, 1 Skin instance is created with the HEAD parameter
, and then a certain number of Skins are created with the BODY parameter
. And now the problem is that there are a lot of Skin type classes and a common method for creating instances from parameters is needed.
something like
Game Loop:
unit1 = new Unit('Skin10');
Unit Class

class Unit(Skin) {
this.Skin = Skin; 
var blabla = blabla
head = new Skin(this.Skin,'HEAD');
arrayOfBody = new array;
for (i = 0; i > 10; i++){
child = new Skin(this.Skin, 'BODY');
array.push(child);
}
}

What patterns are commonly used in this situation?
PS By the way, Skin classes will only have static methods and variables.

Answer 1

What patterns are commonly used in this situation?

Builder is most suitable here .
Creational Design Patterns