How does Gnar's lore fit current lore concepts?

In the past, a lot of lore was reworked because the stories told were very isolated and didn't have a lot of room for interaction with other champions. Trundle as an example was a cursed troll in the league to help his people, and that was deemed insufficient. When I look at Gnar however I see the same issues. He was frozen in ice and thawed out presumably thousands of years later. He has no relation to any species or characters, including other yordles, who he likely wouldn't even equate as his own species.

I fail to see how Gnar or his lore create story opportunities, beyond perhaps heimerdinger wanting to research him.

So I want to know what was the thought process behind Gnar's lore, and why he seems so cut off from every other champion.