Assuming that the leak is true and Raa'Tul will be a champion; this name is very awkward. They say that Raa'Tul will be a Darkin like Aatrox; but the way that the name is written suggests that Raa'Tul will be a Voidborn, as every Voidborn's name is written this way, separated with an apostrophe (as seen in Rek'Sai, Cho'Gath, Kha'Zix, etc)
Is there any information about Raa'Tul that suggests that he will be a Darkin, and not a Voidborn?
Nightmist Dark2 votesI think Darkin could be like symbiotes and they feed from a host negative emotions. The host can be anything sentient, from humans, yordles, voids, creatures, etc. http://static.comicvine.com/uploads/original/1/15776/1289329-symbiotes2.jpg
Cindikle1 votesWhat if he's both? Not like we know what the Darkin are. Whos to say they can't take on Void properties. Aatrox could be the human-like one.
Neamean1 votesif this is true can't wait for the yordle darkin and maybe Aatrox is an angel darkin 
YumaS2Astral1 votesI've heard that a champion can be from two places, such as 
- He is a yordle from Ionia - but as far as I know, no champion can be part of two species.
Vel'Koz could be a Voidborn and a Watcher at same time, but Riot has said that he isn't one of Lissandra's Watchers (although this doesn't mean that he isn't a watcher)
7ha7guy7771 votesThe aa might be proof. It's possible all Darkin have names with an aa in it. We won't know until the other 3 are revealed.
YumaS2Astral1 votesThen he is an Darkin and a Voidborn at same time? just like the below user said
Noctius281 votesAatrox Q&A said they are all from Runeterra, not from other dimensions like Kayle
The Void is another Dimension so I'm pretty sure no Darkin is from there
He/she has ' in the name but also has AA which sound like Aatrox, the name could also be temporary and the info about it might be dated, his name could be Raatul right now
If the leak is to be trusted then he is definitely a Darkin, no doubt about that, the name however could have changed
