The Darkin Behemoth
Sett's Champ Insights came out today, and we learned that Sett's early designs included a concept called the Darkin Behemoth, and really it's a shame that we didn't get him (yeah yeah, Sett's more marketable and pretty and the whole nine yards, etc.), because the more I think about it, the more interested I become, namely because of one thing: This Darkin doesn't have a weapon.
Of course, that might've changed as the character was developed further, but a bare-knuckle Darkin would imply he was never caught or imprisoned. A Darkin who evaded capture? There's a story there. Of course, I can't say what kind of personality he would've had, and how he would stand apart from the viciously joyful Rhaast and nihilistic Aatrox (and I'm not counting Varus, since he needs an update bad). Would he want to free his Darkin brethren so they can rule together again? Would he want to hunt down the reemerging Darkin ("whoever wins, we lose") because he sees them as a threat to his own power? There's a story there. It's just a shame we may never get it.