Varus lore could be fixed by adding this to his story.

New varus consumed the gay couples. The gay couples is trapped inside the gem in varus chest. This makes new varus a single person (because 3 people in one makes no sense at all).

Now let's make this interesting. Old varus (whoever riot wants to name this hero) keeps his old story AND fuzes with new varus through some kind of way and OLD VARUS is in control fully of the body. We might as well just add one more body into the mix because 3 made no sense alway, let's just make it 4.

As far as the gay couple. MAKE THEM THEIR OWN CHAMPION IN THE FUTURE. Because this way a good concept but in regards to varus they make no sense.