First, the basics...

Lloyd = Luke Skywalker

See, old Lloyd = old Luke:

This one's a little confusing, but basically little kid Lloyd looks like young Anakin, and young Garmadon/Wu look like young Ben.

Ben = Wu, Anakin = Garmadon:

It's remarkable...

Again, Anakin = Garmadon, and old Ben = old Wu!

This one speaks for itself:

Obviously the above is Anakin and Garmadon's wife.

Below is confusing because it's still Misako but this time it's Leia.