Yes. You need to create a controller that returns a Json result. Make an ajax call to the controllers route and stuff the response into a variable. Then refer to that in your observable. It might look something like this on the front end:
$.ajax("mysite/getstuff").done(
function(data){
var observable = kendo.observable(data);
});
In this case the getstuff method on the controller needs to return a JSON object containing all of the properties and arrays you need like this:
{
people: [array of people],
products: [array of products],
animals: [array pf animals] //etc
}