MyControllerThing.cls

public with sharing class MyControllerThing{
	@RemoteAction
	public static MyWrapperThing getWrapper(){
		MyWrapperThing result = new MyWrapperThing();
		result.isSomething = true;
		result.name = 'my wrapper obj';
		result.version = 7;
		return result;
	}
	
	@RemoteAction
	public static String getWrapperJSON(){
		MyWrapperThing result = new MyWrapperThing();
		result.isSomething = true;
		result.name = 'my wrapper obj';
		result.version = 7;
		return JSON.serialize(result);
	}
}

MyWrapperThing.cls

public class MyWrapperThing{

	public boolean isSomething;
	public String name;
	public Integer version;
	public String Id{
		get{
			return name+'.'+version;
		}
	}
}